399931204772 has 12 divisors (see below), whose sum is σ = 763505027376. Its totient is φ = 181786911240.

The previous prime is 399931204769. The next prime is 399931204861. The reversal of 399931204772 is 277402139993.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4544672738 + ... + 4544672825.

It is an arithmetic number, because the mean of its divisors is an integer number (63625418948).

Almost surely, 2^399931204772 is an apocalyptic number.

It is an amenable number.

399931204772 is a deficient number, since it is larger than the sum of its proper divisors (363573822604).

399931204772 is a wasteful number, since it uses less digits than its factorization.

399931204772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089345578 (or 9089345576 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 399931204772 in words is "three hundred ninety-nine billion, nine hundred thirty-one million, two hundred four thousand, seven hundred seventy-two".