398929974633 has 24 divisors (see below), whose sum is σ = 577523700000. Its totient is φ = 265357491264.

The previous prime is 398929974623. The next prime is 398929974637. The reversal of 398929974633 is 336479929893.

398929974633 is a `hidden beast` number, since 398 + 92 + 9 + 97 + 4 + 63 + 3 = 666.

It is not a de Polignac number, because 398929974633 - 2¹⁰ = 398929973609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398929974637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26260266 + ... + 26275452.

It is an arithmetic number, because the mean of its divisors is an integer number (24063487500).

Almost surely, 2^398929974633 is an apocalyptic number.

It is an amenable number.

398929974633 is a deficient number, since it is larger than the sum of its proper divisors (178593725367).

398929974633 is a wasteful number, since it uses less digits than its factorization.

398929974633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21541 (or 21538 counting only the distinct ones).

The product of its digits is 476171136, while the sum is 72.

The spelling of 398929974633 in words is "three hundred ninety-eight billion, nine hundred twenty-nine million, nine hundred seventy-four thousand, six hundred thirty-three".