398877632972 has 48 divisors (see below), whose sum is σ = 870889895232. Its totient is φ = 155636121600.

The previous prime is 398877632911. The next prime is 398877632977. The reversal of 398877632972 is 279236778893.

It is a junction number, because it is equal to n+sod(n) for n = 398877632896 and 398877632905.

It is not an unprimeable number, because it can be changed into a prime (398877632977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7479029 + ... + 7532172.

It is an arithmetic number, because the mean of its divisors is an integer number (18143539484).

Almost surely, 2^398877632972 is an apocalyptic number.

It is an amenable number.

398877632972 is an abundant number, since it is smaller than the sum of its proper divisors (472012262260).

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

398877632972 is a wasteful number, since it uses less digits than its factorization.

398877632972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15011298 (or 15011296 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 71.

The spelling of 398877632972 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, six hundred thirty-two thousand, nine hundred seventy-two".