397395905760 has 192 divisors, whose sum is σ = 1589583744000. Its totient is φ = 90833342976.

The previous prime is 397395905749. The next prime is 397395905779. The reversal of 397395905760 is 67509593793.

397395905760 is a `hidden beast` number, since 3 + 9 + 7 + 3 + 9 + 59 + 0 + 576 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6540460 + ... + 6600939.

It is an arithmetic number, because the mean of its divisors is an integer number (8279082000).

Almost surely, 2^397395905760 is an apocalyptic number.

397395905760 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397395905760 is an abundant number, since it is smaller than the sum of its proper divisors (1192187838240).

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

397395905760 is a wasteful number, since it uses less digits than its factorization.

397395905760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13141430 (or 13141416 counting only the distinct ones).

The product of its (nonzero) digits is 48223350, while the sum is 63.

The spelling of 397395905760 in words is "three hundred ninety-seven billion, three hundred ninety-five million, nine hundred five thousand, seven hundred sixty".