399206538600 has 48 divisors (see below), whose sum is σ = 1237540271520. Its totient is φ = 106455076800.

The previous prime is 399206538581. The next prime is 399206538623. The reversal of 399206538600 is 6835602993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332671516 + ... + 332672715.

It is an arithmetic number, because the mean of its divisors is an integer number (25782088990).

Almost surely, 2^399206538600 is an apocalyptic number.

399206538600 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399206538600 is an abundant number, since it is smaller than the sum of its proper divisors (838333732920).

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

399206538600 is a wasteful number, since it uses less digits than its factorization.

399206538600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665344250 (or 665344241 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 399206538600 in words is "three hundred ninety-nine billion, two hundred six million, five hundred thirty-eight thousand, six hundred".