399760908 has 12 divisors (see below), whose sum is σ = 932775480. Its totient is φ = 133253632.

The previous prime is 399760883. The next prime is 399760937. The reversal of 399760908 is 809067993.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16656693 + ... + 16656716.

It is an arithmetic number, because the mean of its divisors is an integer number (77731290).

Almost surely, 2^399760908 is an apocalyptic number.

It is an amenable number.

399760908 is an abundant number, since it is smaller than the sum of its proper divisors (533014572).

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

399760908 is a wasteful number, since it uses less digits than its factorization.

399760908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33313416 (or 33313414 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 399760908 is about 19994.0218065301. The cubic root of 399760908 is about 736.6594667255.

The spelling of 399760908 in words is "three hundred ninety-nine million, seven hundred sixty thousand, nine hundred eight".