199288957 has 16 divisors (see below), whose sum is σ = 240071040. Its totient is φ = 161808192.

The previous prime is 199288939. The next prime is 199289003. The reversal of 199288957 is 759882991.

It is not a de Polignac number, because 199288957 - 2²⁷ = 65071229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199288927) 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, 1498 + ... + 20020.

It is an arithmetic number, because the mean of its divisors is an integer number (15004440).

Almost surely, 2^199288957 is an apocalyptic number.

It is an amenable number.

199288957 is a deficient number, since it is larger than the sum of its proper divisors (40782083).

199288957 is a wasteful number, since it uses less digits than its factorization.

199288957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18612.

The product of its digits is 3265920, while the sum is 58.

The square root of 199288957 is about 14116.9740737879. The cubic root of 199288957 is about 584.1096906066.

The spelling of 199288957 in words is "one hundred ninety-nine million, two hundred eighty-eight thousand, nine hundred fifty-seven".