397134591 has 16 divisors (see below), whose sum is σ = 608544000. Its totient is φ = 225664128.

The previous prime is 397134571. The next prime is 397134601. The reversal of 397134591 is 195431793.

It is not a de Polignac number, because 397134591 - 2⁵ = 397134559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397134571) 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, 49066 + ... + 56583.

It is an arithmetic number, because the mean of its divisors is an integer number (38034000).

Almost surely, 2^397134591 is an apocalyptic number.

397134591 is a deficient number, since it is larger than the sum of its proper divisors (211409409).

397134591 is a wasteful number, since it uses less digits than its factorization.

397134591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105838.

The product of its digits is 102060, while the sum is 42.

The square root of 397134591 is about 19928.2360232912. The cubic root of 397134591 is about 735.0427056495.

The spelling of 397134591 in words is "three hundred ninety-seven million, one hundred thirty-four thousand, five hundred ninety-one".