397144898988 has 12 divisors (see below), whose sum is σ = 926671431000. Its totient is φ = 132381632992.

The previous prime is 397144898971. The next prime is 397144899031. The reversal of 397144898988 is 889898441793.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16547704113 + ... + 16547704136.

It is an arithmetic number, because the mean of its divisors is an integer number (77222619250).

Almost surely, 2^397144898988 is an apocalyptic number.

It is an amenable number.

397144898988 is an abundant number, since it is smaller than the sum of its proper divisors (529526532012).

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

397144898988 is a wasteful number, since it uses less digits than its factorization.

397144898988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33095408256 (or 33095408254 counting only the distinct ones).

The product of its digits is 1003290624, while the sum is 78.

The spelling of 397144898988 in words is "three hundred ninety-seven billion, one hundred forty-four million, eight hundred ninety-eight thousand, nine hundred eighty-eight".