399313631910 has 32 divisors (see below), whose sum is σ = 976434847200. Its totient is φ = 104474509568.

The previous prime is 399313631903. The next prime is 399313631923. The reversal of 399313631910 is 19136313993.

It is a self number, because there is not a number n which added to its sum of digits gives 399313631910.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125568735 + ... + 125571914.

It is an arithmetic number, because the mean of its divisors is an integer number (30513588975).

Almost surely, 2^399313631910 is an apocalyptic number.

399313631910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399313631910 is an abundant number, since it is smaller than the sum of its proper divisors (577121215290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399313631910 is a wasteful number, since it uses less digits than its factorization.

399313631910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251140712.

The product of its (nonzero) digits is 354294, while the sum is 48.

The spelling of 399313631910 in words is "three hundred ninety-nine billion, three hundred thirteen million, six hundred thirty-one thousand, nine hundred ten".