117309855 has 16 divisors (see below), whose sum is σ = 202134240. Its totient is φ = 57752448.

The previous prime is 117309823. The next prime is 117309887. The reversal of 117309855 is 558903711.

It is an interprime number because it is at equal distance from previous prime (117309823) and next prime (117309887).

It is not a de Polignac number, because 117309855 - 2⁵ = 117309823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300600 + ... + 300989.

It is an arithmetic number, because the mean of its divisors is an integer number (12633390).

Almost surely, 2^117309855 is an apocalyptic number.

117309855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

117309855 is a deficient number, since it is larger than the sum of its proper divisors (84824385).

117309855 is a wasteful number, since it uses less digits than its factorization.

117309855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601610.

The product of its (nonzero) digits is 37800, while the sum is 39.

The square root of 117309855 is about 10830.9674083158. The cubic root of 117309855 is about 489.5287083082.

The spelling of 117309855 in words is "one hundred seventeen million, three hundred nine thousand, eight hundred fifty-five".