399100684 has 12 divisors (see below), whose sum is σ = 699175008. Its totient is φ = 199336400.

The previous prime is 399100657. The next prime is 399100729. The reversal of 399100684 is 486001993.

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, 49252 + ... + 56779.

It is an arithmetic number, because the mean of its divisors is an integer number (58264584).

Almost surely, 2^399100684 is an apocalyptic number.

It is an amenable number.

399100684 is a deficient number, since it is larger than the sum of its proper divisors (300074324).

399100684 is a wasteful number, since it uses less digits than its factorization.

399100684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106976 (or 106974 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 399100684 is about 19977.5044487544. The cubic root of 399100684 is about 736.2537006414.

The spelling of 399100684 in words is "three hundred ninety-nine million, one hundred thousand, six hundred eighty-four".