Barack Obama's newly-published memoir has managed to sell more than 1.7 million copies in its first week.

Per CBS News, the former POTUS' second autobiography, titled A Promised Land, has managed to sell more than 1.7 million copies in just seven days, breaking records for its publisher, Penguin Random House.

On the first day alone, Obama's book sold approximately 887,000 units in all formats and editions in the United States and Canada, making it the largest first-day sales total ever.

Additionally, the hardcover edition of the memoirs now has 4.3 million copies in print in the United States and Canada after an initial printing of 3.4 million copies.

It is also the number one bestselling book in the United Kingdom as of the time of writing.

However, the reaction to the text from some readers has been mixed, with a number of Twitter-users bemoaning the length of the book and Obama's mammoth 29-hour-long audiobook version, which the former President himself narrates.

For example, one Twitter user branded Obama as an "egomaniac", writing:

"So Obama released his book and is doing his promo tour just in time to upstage (or provide cover) Biden's win. Biden got more votes than Obama, but only 10% of them weren't anti-Trump votes. Still, must be hard on Mr Egomaniac! [sic]"

Meanwhile, another Twitter user added: "God, Obama is putrid!! He spoke about himself for 29 hours!! Ego maniac, completely lied about everything in his 700 page, second autobiography. SICK can't wait for the next one. If you say it enough it becomes a fact, right? [sic]"

However, some other people have reacted more positively to the memoir.

For instance, one Twitter user wrote: "Just used my crisp new Audible credit to buy the new @BarackObama book and it's 29 hours of that voice, you guys. TWENTY-NINE HOURS. Whatever is ailing me will surely be cured by the end. [sic]"

According to Amazon, A Promised Land details Obama's early life and the first two-and-a-half years he spent living in the White House, up until the death of Osama Bin Laden.

In addition, it currently holds a 4.9/5 star rating on the commerce site, after receiving more than 3,700 reviews.

Per The Guardian, the 59-year-old explained in the introduction that it took longer than expected to write because "the book kept growing in length and scope" during the process of composition.

Barack Obama's newly-published memoir has managed to sell more than 1.7 million copies in its first week.

Per CBS News, the former POTUS' second autobiography, titled A Promised Land, has managed to sell more than 1.7 million copies in just seven days, breaking records for its publisher, Penguin Random House.

On the first day alone, Obama's book sold approximately 887,000 units in all formats and editions in the United States and Canada, making it the largest first-day sales total ever.

Additionally, the hardcover edition of the memoirs now has 4.3 million copies in print in the United States and Canada after an initial printing of 3.4 million copies.

It is also the number one bestselling book in the United Kingdom as of the time of writing.

However, the reaction to the text from some readers has been mixed, with a number of Twitter-users bemoaning the length of the book and Obama's mammoth 29-hour-long audiobook version, which the former President himself narrates.

For example, one Twitter user branded Obama as an "egomaniac", writing:

"So Obama released his book and is doing his promo tour just in time to upstage (or provide cover) Biden's win. Biden got more votes than Obama, but only 10% of them weren't anti-Trump votes. Still, must be hard on Mr Egomaniac! [sic]"

Meanwhile, another Twitter user added: "God, Obama is putrid!! He spoke about himself for 29 hours!! Ego maniac, completely lied about everything in his 700 page, second autobiography. SICK can't wait for the next one. If you say it enough it becomes a fact, right? [sic]"

However, some other people have reacted more positively to the memoir.

For instance, one Twitter user wrote: "Just used my crisp new Audible credit to buy the new @BarackObama book and it's 29 hours of that voice, you guys. TWENTY-NINE HOURS. Whatever is ailing me will surely be cured by the end. [sic]"

According to Amazon, A Promised Land details Obama's early life and the first two-and-a-half years he spent living in the White House, up until the death of Osama Bin Laden.

In addition, it currently holds a 4.9/5 star rating on the commerce site, after receiving more than 3,700 reviews.

Per The Guardian, the 59-year-old explained in the introduction that it took longer than expected to write because "the book kept growing in length and scope" during the process of composition.