397133457 has 16 divisors (see below), whose sum is σ = 606494592. Its totient is φ = 226431360.

The previous prime is 397133441. The next prime is 397133483. The reversal of 397133457 is 754331793.

It is not a de Polignac number, because 397133457 - 2⁴ = 397133441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397133057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11094 + ... + 30287.

It is an arithmetic number, because the mean of its divisors is an integer number (37905912).

Almost surely, 2^397133457 is an apocalyptic number.

It is an amenable number.

397133457 is a deficient number, since it is larger than the sum of its proper divisors (209361135).

397133457 is a wasteful number, since it uses less digits than its factorization.

397133457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41848.

The product of its digits is 238140, while the sum is 42.

The square root of 397133457 is about 19928.2075711791. The cubic root of 397133457 is about 735.0420060217.

The spelling of 397133457 in words is "three hundred ninety-seven million, one hundred thirty-three thousand, four hundred fifty-seven".