399299779200 has 192 divisors, whose sum is σ = 1503078707520. Its totient is φ = 91268505600.

The previous prime is 399299779171. The next prime is 399299779231. The reversal of 399299779200 is 2977992993.

It is a tau number, because it is divible by the number of its divisors (192).

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, 2903781 + ... + 3038180.

It is an arithmetic number, because the mean of its divisors is an integer number (7828534935).

Almost surely, 2^399299779200 is an apocalyptic number.

399299779200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399299779200 is an abundant number, since it is smaller than the sum of its proper divisors (1103778928320).

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

399299779200 is a wasteful number, since it uses less digits than its factorization.

399299779200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941995 (or 5941978 counting only the distinct ones).

The product of its (nonzero) digits is 34720812, while the sum is 66.

The spelling of 399299779200 in words is "three hundred ninety-nine billion, two hundred ninety-nine million, seven hundred seventy-nine thousand, two hundred".