397039772658 has 32 divisors (see below), whose sum is σ = 803250695232. Its totient is φ = 130822344000.

The previous prime is 397039772627. The next prime is 397039772659. The reversal of 397039772658 is 856277930793.

397039772658 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397039772659) 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, 162928 + ... + 905883.

It is an arithmetic number, because the mean of its divisors is an integer number (25101584226).

Almost surely, 2^397039772658 is an apocalyptic number.

397039772658 is an abundant number, since it is smaller than the sum of its proper divisors (406210922574).

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

397039772658 is a wasteful number, since it uses less digits than its factorization.

397039772658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069530.

The product of its (nonzero) digits is 120022560, while the sum is 66.

The spelling of 397039772658 in words is "three hundred ninety-seven billion, thirty-nine million, seven hundred seventy-two thousand, six hundred fifty-eight".