397939045992 has 64 divisors (see below), whose sum is σ = 1053848594880. Its totient is φ = 124786670592.

The previous prime is 397939045981. The next prime is 397939045997. The reversal of 397939045992 is 299540939793.

397939045992 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (397939045997) 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, 677458 + ... + 1120190.

It is an arithmetic number, because the mean of its divisors is an integer number (16466384295).

Almost surely, 2^397939045992 is an apocalyptic number.

It is an amenable number.

397939045992 is an abundant number, since it is smaller than the sum of its proper divisors (655909548888).

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

397939045992 is a wasteful number, since it uses less digits than its factorization.

397939045992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444962 (or 444958 counting only the distinct ones).

The product of its (nonzero) digits is 148803480, while the sum is 69.

The spelling of 397939045992 in words is "three hundred ninety-seven billion, nine hundred thirty-nine million, forty-five thousand, nine hundred ninety-two".