New York (CNN Business) Michelle Obama's new book "Becoming" has sold more than 1.4 million copies in all formats during the first seven days since it hit shelves on November 13.

The former first lady's memoir about her Chicago roots and her time in the White House is also popular overseas, where it's a bestseller in Europe and Scandinavia and the No. 1 adult nonfiction title in the U.K., according to publisher Penguin Random House, which announced the milestone on Wednesday.

After five printings of the hardcover edition, there will be 3 million copies in print in the Canada and the U.S., the publisher said.

This feat follows another milestone earlier in the week, when Barnes & Noble announced that "Becoming" gave the bookseller "the biggest first-week sales of any book this year."

Until November, that title belonged to Bob Woodward's Trump administration dissection, "Fear," which came out in September. But "Becoming" had even stronger sales in its first week, the bookseller said.

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