197934957 has 12 divisors (see below), whose sum is σ = 311897664. Its totient is φ = 119960520.

The previous prime is 197934949. The next prime is 197934959. The reversal of 197934957 is 759439791.

It is a happy number.

It is not a de Polignac number, because 197934957 - 2³ = 197934949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197934959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999573 + ... + 999770.

It is an arithmetic number, because the mean of its divisors is an integer number (25991472).

Almost surely, 2^197934957 is an apocalyptic number.

It is an amenable number.

197934957 is a deficient number, since it is larger than the sum of its proper divisors (113962707).

197934957 is a wasteful number, since it uses less digits than its factorization.

197934957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999360 (or 1999357 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The square root of 197934957 is about 14068.9358872660. The cubic root of 197934957 is about 582.7838395157.

It can be divided in two parts, 197934 and 957, that added together give a palindrome (198891).

The spelling of 197934957 in words is "one hundred ninety-seven million, nine hundred thirty-four thousand, nine hundred fifty-seven".