117899158 has 16 divisors (see below), whose sum is σ = 190935360. Its totient is φ = 54277056.

The previous prime is 117899147. The next prime is 117899191. The reversal of 117899158 is 851998711.

It is a happy number.

It is a super-2 number, since 2×117899158² = 27800422914217928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5091 + ... + 16177.

It is an arithmetic number, because the mean of its divisors is an integer number (11933460).

Almost surely, 2^117899158 is an apocalyptic number.

117899158 is a deficient number, since it is larger than the sum of its proper divisors (73036202).

117899158 is a wasteful number, since it uses less digits than its factorization.

117899158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511.

The product of its digits is 181440, while the sum is 49.

The square root of 117899158 is about 10858.1378698191. The cubic root of 117899158 is about 490.3470510965.

The spelling of 117899158 in words is "one hundred seventeen million, eight hundred ninety-nine thousand, one hundred fifty-eight".