397912670523 has 24 divisors (see below), whose sum is σ = 576130766640. Its totient is φ = 264644452800.

The previous prime is 397912670521. The next prime is 397912670579. The reversal of 397912670523 is 325076219793.

397912670523 is a `hidden beast` number, since 3 + 9 + 7 + 91 + 26 + 7 + 0 + 523 = 666.

It is not a de Polignac number, because 397912670523 - 2¹ = 397912670521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397912670523.

It is not an unprimeable number, because it can be changed into a prime (397912670521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6676765 + ... + 6736097.

It is an arithmetic number, because the mean of its divisors is an integer number (24005448610).

Almost surely, 2^397912670523 is an apocalyptic number.

397912670523 is a deficient number, since it is larger than the sum of its proper divisors (178218096117).

397912670523 is a wasteful number, since it uses less digits than its factorization.

397912670523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61099 (or 61096 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 397912670523 in words is "three hundred ninety-seven billion, nine hundred twelve million, six hundred seventy thousand, five hundred twenty-three".