399394127100 has 72 divisors (see below), whose sum is σ = 1155739777920. Its totient is φ = 106490406080.

The previous prime is 399394127087. The next prime is 399394127123. The reversal of 399394127100 is 1721493993.

It is a self number, because there is not a number n which added to its sum of digits gives 399394127100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2179639 + ... + 2355761.

It is an arithmetic number, because the mean of its divisors is an integer number (16051941360).

Almost surely, 2^399394127100 is an apocalyptic number.

399394127100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399394127100 is an abundant number, since it is smaller than the sum of its proper divisors (756345650820).

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

399394127100 is a wasteful number, since it uses less digits than its factorization.

399394127100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183699 (or 183692 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 48.

The spelling of 399394127100 in words is "three hundred ninety-nine billion, three hundred ninety-four million, one hundred twenty-seven thousand, one hundred".