397517475 has 24 divisors (see below), whose sum is σ = 658283760. Its totient is φ = 211669120.

The previous prime is 397517473. The next prime is 397517489. The reversal of 397517475 is 574715793.

It is not a de Polignac number, because 397517475 - 2¹ = 397517473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397517473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46861 + ... + 54689.

It is an arithmetic number, because the mean of its divisors is an integer number (27428490).

Almost surely, 2^397517475 is an apocalyptic number.

397517475 is a deficient number, since it is larger than the sum of its proper divisors (260766285).

397517475 is a wasteful number, since it uses less digits than its factorization.

397517475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519 (or 8514 counting only the distinct ones).

The product of its digits is 926100, while the sum is 48.

The square root of 397517475 is about 19937.8402792278. The cubic root of 397517475 is about 735.2788520344.

The spelling of 397517475 in words is "three hundred ninety-seven million, five hundred seventeen thousand, four hundred seventy-five".