398970038556 has 36 divisors (see below), whose sum is σ = 1008805488600. Its totient is φ = 132950730528.

The previous prime is 398970038521. The next prime is 398970038567. The reversal of 398970038556 is 655830079893.

398970038556 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 70 + 0 + 3 + 8 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×398970038556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398970038493 and 398970038502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1513066 + ... + 1757073.

Almost surely, 2^398970038556 is an apocalyptic number.

398970038556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

398970038556 is an abundant number, since it is smaller than the sum of its proper divisors (609835450044).

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

398970038556 is a wasteful number, since it uses less digits than its factorization.

398970038556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273538 (or 3273533 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 398970038556 in words is "three hundred ninety-eight billion, nine hundred seventy million, thirty-eight thousand, five hundred fifty-six".