397586880432 has 320 divisors, whose sum is σ = 1352718976000. Its totient is φ = 111731477760.

The previous prime is 397586880389. The next prime is 397586880433. The reversal of 397586880432 is 234088685793.

397586880432 is a `hidden beast` number, since 3 + 9 + 7 + 586 + 8 + 8 + 0 + 43 + 2 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 397586880432.

It is not an unprimeable number, because it can be changed into a prime (397586880433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9016743 + ... + 9060729.

It is an arithmetic number, because the mean of its divisors is an integer number (4227246800).

Almost surely, 2^397586880432 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 397586880432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676359488000).

397586880432 is an abundant number, since it is smaller than the sum of its proper divisors (955132095568).

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

397586880432 is a wasteful number, since it uses less digits than its factorization.

397586880432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44086 (or 44060 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 397586880432 in words is "three hundred ninety-seven billion, five hundred eighty-six million, eight hundred eighty thousand, four hundred thirty-two".