399562573922 has 6 divisors (see below), whose sum is σ = 599345201793. Its totient is φ = 199780839992.

The previous prime is 399562573919. The next prime is 399562574011. The reversal of 399562573922 is 229375265993.

It can be written as a sum of positive squares in 2 ways, for example, as 381737386801 + 17825187121 = 617849^2 + 133511^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=446969.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 670454 + ... + 1117422.

Almost surely, 2^399562573922 is an apocalyptic number.

399562573922 is a deficient number, since it is larger than the sum of its proper divisors (199782627871).

399562573922 is an frugal number, since it uses more digits than its factorization.

399562573922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893940 (or 446971 counting only the distinct ones).

The product of its digits is 55112400, while the sum is 62.

The spelling of 399562573922 in words is "three hundred ninety-nine billion, five hundred sixty-two million, five hundred seventy-three thousand, nine hundred twenty-two".