399556604 has 6 divisors (see below), whose sum is σ = 699224064. Its totient is φ = 199778300.

The previous prime is 399556601. The next prime is 399556607. The reversal of 399556604 is 406655993.

It is an interprime number because it is at equal distance from previous prime (399556601) and next prime (399556607).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399556601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49944572 + ... + 49944579.

It is an arithmetic number, because the mean of its divisors is an integer number (116537344).

Almost surely, 2^399556604 is an apocalyptic number.

It is an amenable number.

399556604 is a deficient number, since it is larger than the sum of its proper divisors (299667460).

399556604 is a wasteful number, since it uses less digits than its factorization.

399556604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99889155 (or 99889153 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 47.

The square root of 399556604 is about 19988.9120264210. The cubic root of 399556604 is about 736.5339515998.

The spelling of 399556604 in words is "three hundred ninety-nine million, five hundred fifty-six thousand, six hundred four".