399662394216 has 16 divisors (see below), whose sum is σ = 999155985600. Its totient is φ = 133220798064.

The previous prime is 399662394181. The next prime is 399662394239. The reversal of 399662394216 is 612493266993.

399662394216 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 399662394216.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8326299856 + ... + 8326299903.

It is an arithmetic number, because the mean of its divisors is an integer number (62447249100).

Almost surely, 2^399662394216 is an apocalyptic number.

It is an amenable number.

399662394216 is an abundant number, since it is smaller than the sum of its proper divisors (599493591384).

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

399662394216 is a wasteful number, since it uses less digits than its factorization.

399662394216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652599768 (or 16652599764 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 60.

The spelling of 399662394216 in words is "three hundred ninety-nine billion, six hundred sixty-two million, three hundred ninety-four thousand, two hundred sixteen".