391314904 has 16 divisors (see below), whose sum is σ = 746152200. Its totient is φ = 192340992.

The previous prime is 391314877. The next prime is 391314919. The reversal of 391314904 is 409413193.

It is a super-4 number, since 4×391314904⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 391314904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414057 + ... + 415000.

Almost surely, 2^391314904 is an apocalyptic number.

It is an amenable number.

391314904 is a deficient number, since it is larger than the sum of its proper divisors (354837296).

391314904 is a wasteful number, since it uses less digits than its factorization.

391314904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829122 (or 829118 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 391314904 is about 19781.6810205806. The cubic root of 391314904 is about 731.4345369706.

The spelling of 391314904 in words is "three hundred ninety-one million, three hundred fourteen thousand, nine hundred four".