397399388626944 has 1792 divisors, whose sum is σ = 1366541626982400. Its totient is φ = 112954599014400.

The previous prime is 397399388626939. The next prime is 397399388626991. The reversal of 397399388626944 is 449626883993793.

397399388626944 is a `hidden beast` number, since 3 + 9 + 7 + 399 + 38 + 86 + 26 + 94 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1065413910342 + ... + 1065413910714.

Almost surely, 2^{397399388626944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397399388626944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683270813491200).

397399388626944 is an abundant number, since it is smaller than the sum of its proper divisors (969142238355456).

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

397399388626944 is a wasteful number, since it uses less digits than its factorization.

397399388626944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 732 counting only the distinct ones).

The product of its digits is 91424858112, while the sum is 90.

The spelling of 397399388626944 in words is "three hundred ninety-seven trillion, three hundred ninety-nine billion, three hundred eighty-eight million, six hundred twenty-six thousand, nine hundred forty-four".