397941575 has 12 divisors (see below), whose sum is σ = 509366208. Its totient is φ = 308083200.

The previous prime is 397941553. The next prime is 397941589. The reversal of 397941575 is 575149793.

It is not a de Polignac number, because 397941575 - 2¹⁰ = 397940551 is a prime.

It is a super-2 number, since 2×397941575² = 316714994226961250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255962 + ... + 257511.

It is an arithmetic number, because the mean of its divisors is an integer number (42447184).

Almost surely, 2^397941575 is an apocalyptic number.

397941575 is a deficient number, since it is larger than the sum of its proper divisors (111424633).

397941575 is a wasteful number, since it uses less digits than its factorization.

397941575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513514 (or 513509 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 50.

The square root of 397941575 is about 19948.4729992047. The cubic root of 397941575 is about 735.5402417440.

It can be divided in two parts, 3979 and 41575, that added together give a palindrome (45554).

The spelling of 397941575 in words is "three hundred ninety-seven million, nine hundred forty-one thousand, five hundred seventy-five".