The figure also includes audio books, e-books and pre-booked copies. As a comparison, another book success can be mentioned, former security adviser John Bolton's book about the president, which sold 780,000 copies during its first week of sales.

The book "Too Much and Never Enough: How My Family Created the World's Most Dangerous Man" claims, among other things, that US President Donald Trump, of whom the author is the niece, has sprung from a deeply dysfunctional family and that his upbringing has shaped him into the "self-glorifying" and "lying" person he is today.

The White House firmly denies the allegations in the book. Other parts of the Trump clan, led by the president's brother Robert Trump, are also critical.