957139197 has 48 divisors (see below), whose sum is σ = 1514376000. Its totient is φ = 536067840.

The previous prime is 957139187. The next prime is 957139207. The reversal of 957139197 is 791931759.

It is an interprime number because it is at equal distance from previous prime (957139187) and next prime (957139207).

It is not a de Polignac number, because 957139197 - 2⁶ = 957139133 is a prime.

It is a super-2 number, since 2×957139197² = 1832230884867609618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (957139147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1949122 + ... + 1949612.

It is an arithmetic number, because the mean of its divisors is an integer number (31549500).

Almost surely, 2^957139197 is an apocalyptic number.

It is an amenable number.

957139197 is a deficient number, since it is larger than the sum of its proper divisors (557236803).

957139197 is a wasteful number, since it uses less digits than its factorization.

957139197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 739 counting only the distinct ones).

The product of its digits is 535815, while the sum is 51.

The square root of 957139197 is about 30937.6663147045. Note that the first 3 decimals coincide. The cubic root of 957139197 is about 985.5039454481.

The spelling of 957139197 in words is "nine hundred fifty-seven million, one hundred thirty-nine thousand, one hundred ninety-seven".