397898790912 has 960 divisors, whose sum is σ = 1429632640800. Its totient is φ = 110612791296.

The previous prime is 397898790899. The next prime is 397898790979. The reversal of 397898790912 is 219097898793.

397898790912 is a `hidden beast` number, since 397 + 89 + 8 + 79 + 0 + 91 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10754021358 + ... + 10754021394.

Almost surely, 2^397898790912 is an apocalyptic number.

397898790912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397898790912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714816320400).

397898790912 is an abundant number, since it is smaller than the sum of its proper divisors (1031733849888).

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

397898790912 is an frugal number, since it uses more digits than its factorization.

397898790912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 72.

The spelling of 397898790912 in words is "three hundred ninety-seven billion, eight hundred ninety-eight million, seven hundred ninety thousand, nine hundred twelve".