398557652896 has 24 divisors (see below), whose sum is σ = 845018870724. Its totient is φ = 183949685760.

The previous prime is 398557652893. The next prime is 398557652897. The reversal of 398557652896 is 698256755893.

It can be written as a sum of positive squares in 2 ways, for example, as 394961971600 + 3595681296 = 628460^2 + 59964^2 .

It is not an unprimeable number, because it can be changed into a prime (398557652891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479035225 + ... + 479036056.

Almost surely, 2^398557652896 is an apocalyptic number.

It is an amenable number.

398557652896 is an abundant number, since it is smaller than the sum of its proper divisors (446461217828).

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

398557652896 is a wasteful number, since it uses less digits than its factorization.

398557652896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958071304 (or 958071296 counting only the distinct ones).

The product of its digits is 979776000, while the sum is 73.

The spelling of 398557652896 in words is "three hundred ninety-eight billion, five hundred fifty-seven million, six hundred fifty-two thousand, eight hundred ninety-six".