399875568912 has 80 divisors (see below), whose sum is σ = 1147947092160. Its totient is φ = 133273728000.

The previous prime is 399875568907. The next prime is 399875568919. The reversal of 399875568912 is 219865578993.

It is a super-2 number, since 2×399875568912² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (399875568919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3328287 + ... + 3446337.

It is an arithmetic number, because the mean of its divisors is an integer number (14349338652).

Almost surely, 2^399875568912 is an apocalyptic number.

It is an amenable number.

399875568912 is an abundant number, since it is smaller than the sum of its proper divisors (748071523248).

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

399875568912 is a wasteful number, since it uses less digits than its factorization.

399875568912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125909 (or 125897 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 72.

The spelling of 399875568912 in words is "three hundred ninety-nine billion, eight hundred seventy-five million, five hundred sixty-eight thousand, nine hundred twelve".