397039772648 has 32 divisors (see below), whose sum is σ = 801600753600. Its totient is φ = 183675424512.

The previous prime is 397039772627. The next prime is 397039772659. The reversal of 397039772648 is 846277930793.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24732740 + ... + 24748787.

It is an arithmetic number, because the mean of its divisors is an integer number (25050023550).

Almost surely, 2^397039772648 is an apocalyptic number.

It is an amenable number.

397039772648 is an abundant number, since it is smaller than the sum of its proper divisors (404560980952).

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

397039772648 is a wasteful number, since it uses less digits than its factorization.

397039772648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49481609 (or 49481605 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 65.

The spelling of 397039772648 in words is "three hundred ninety-seven billion, thirty-nine million, seven hundred seventy-two thousand, six hundred forty-eight".