117399815 has 8 divisors (see below), whose sum is σ = 151716768. Its totient is φ = 86695200.

The previous prime is 117399809. The next prime is 117399829. The reversal of 117399815 is 518993711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117399815 - 2¹⁶ = 117334279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903011 + ... + 903140.

It is an arithmetic number, because the mean of its divisors is an integer number (18964596).

Almost surely, 2^117399815 is an apocalyptic number.

117399815 is a deficient number, since it is larger than the sum of its proper divisors (34316953).

117399815 is a wasteful number, since it uses less digits than its factorization.

117399815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806169.

The product of its digits is 68040, while the sum is 44.

The square root of 117399815 is about 10835.1195194146. The cubic root of 117399815 is about 489.6538093363.

The spelling of 117399815 in words is "one hundred seventeen million, three hundred ninety-nine thousand, eight hundred fifteen".