397163511 has 6 divisors (see below), whose sum is σ = 573680640. Its totient is φ = 264775668.

The previous prime is 397163461. The next prime is 397163519. The reversal of 397163511 is 115361793.

397163511 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 635 + 11 = 666.

It is not a de Polignac number, because 397163511 - 2⁶ = 397163447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397163519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22064631 + ... + 22064648.

It is an arithmetic number, because the mean of its divisors is an integer number (95613440).

Almost surely, 2^397163511 is an apocalyptic number.

397163511 is a deficient number, since it is larger than the sum of its proper divisors (176517129).

397163511 is a wasteful number, since it uses less digits than its factorization.

397163511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44129285 (or 44129282 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 397163511 is about 19928.9616136918. The cubic root of 397163511 is about 735.0605475596.

The spelling of 397163511 in words is "three hundred ninety-seven million, one hundred sixty-three thousand, five hundred eleven".