397213293644 has 12 divisors (see below), whose sum is σ = 695557455768. Its totient is φ = 198482592000.

The previous prime is 397213293629. The next prime is 397213293667. The reversal of 397213293644 is 446392312793.

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, 31006502 + ... + 31019309.

It is an arithmetic number, because the mean of its divisors is an integer number (57963121314).

Almost surely, 2^397213293644 is an apocalyptic number.

It is an amenable number.

397213293644 is a deficient number, since it is larger than the sum of its proper divisors (298344162124).

397213293644 is a wasteful number, since it uses less digits than its factorization.

397213293644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62027416 (or 62027414 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 53.

The spelling of 397213293644 in words is "three hundred ninety-seven billion, two hundred thirteen million, two hundred ninety-three thousand, six hundred forty-four".