399951163684 has 12 divisors (see below), whose sum is σ = 700000043008. Its totient is φ = 199951151400.

The previous prime is 399951163649. The next prime is 399951163691. The reversal of 399951163684 is 486361159993.

It is a happy 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, 6070752 + ... + 6136279.

Almost surely, 2^399951163684 is an apocalyptic number.

It is an amenable number.

399951163684 is a deficient number, since it is larger than the sum of its proper divisors (300048879324).

399951163684 is a wasteful number, since it uses less digits than its factorization.

399951163684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12215226 (or 12215224 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 64.

The spelling of 399951163684 in words is "three hundred ninety-nine billion, nine hundred fifty-one million, one hundred sixty-three thousand, six hundred eighty-four".