399621314496 has 28 divisors (see below), whose sum is σ = 1057331395112. Its totient is φ = 133207104768.

The previous prime is 399621314471. The next prime is 399621314513. The reversal of 399621314496 is 694413126993.

It is a congruent number.

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, 1040680315 + ... + 1040680698.

Almost surely, 2^399621314496 is an apocalyptic number.

It is an amenable number.

399621314496 is an abundant number, since it is smaller than the sum of its proper divisors (657710080616).

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

399621314496 is a wasteful number, since it uses less digits than its factorization.

399621314496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081361028 (or 2081361018 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 57.

The spelling of 399621314496 in words is "three hundred ninety-nine billion, six hundred twenty-one million, three hundred fourteen thousand, four hundred ninety-six".