398566179872 has 48 divisors (see below), whose sum is σ = 896977089792. Its totient is φ = 170775375360.

The previous prime is 398566179829. The next prime is 398566179911. The reversal of 398566179872 is 278971665893.

It is a junction number, because it is equal to n+sod(n) for n = 398566179796 and 398566179805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800372 + ... + 1199052.

It is an arithmetic number, because the mean of its divisors is an integer number (18687022704).

Almost surely, 2^398566179872 is an apocalyptic number.

398566179872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

398566179872 is an abundant number, since it is smaller than the sum of its proper divisors (498410909920).

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

398566179872 is a wasteful number, since it uses less digits than its factorization.

398566179872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403161 (or 403153 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 71.

The spelling of 398566179872 in words is "three hundred ninety-eight billion, five hundred sixty-six million, one hundred seventy-nine thousand, eight hundred seventy-two".