391713604 has 12 divisors (see below), whose sum is σ = 700084224. Its totient is φ = 191689544.

The previous prime is 391713599. The next prime is 391713611. The reversal of 391713604 is 406317193.

It is a self number, because there is not a number n which added to its sum of digits gives 391713604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041604 + ... + 1041979.

It is an arithmetic number, because the mean of its divisors is an integer number (58340352).

Almost surely, 2^391713604 is an apocalyptic number.

It is an amenable number.

391713604 is a deficient number, since it is larger than the sum of its proper divisors (308370620).

391713604 is a wasteful number, since it uses less digits than its factorization.

391713604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083634 (or 2083632 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 391713604 is about 19791.7559605003. The cubic root of 391713604 is about 731.6828654998.

The spelling of 391713604 in words is "three hundred ninety-one million, seven hundred thirteen thousand, six hundred four".