399604368 has 40 divisors (see below), whose sum is σ = 1057494816. Its totient is φ = 129952000.

The previous prime is 399604339. The next prime is 399604391. The reversal of 399604368 is 863406993.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99558 + ... + 103493.

Almost surely, 2^399604368 is an apocalyptic number.

It is an amenable number.

399604368 is an abundant number, since it is smaller than the sum of its proper divisors (657890448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399604368 is a wasteful number, since it uses less digits than its factorization.

399604368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203103 (or 203097 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 399604368 is about 19990.1067530916. The cubic root of 399604368 is about 736.5632994699.

The spelling of 399604368 in words is "three hundred ninety-nine million, six hundred four thousand, three hundred sixty-eight".