117117879 has 16 divisors (see below), whose sum is σ = 166196448. Its totient is φ = 73106432.

The previous prime is 117117877. The next prime is 117117893. The reversal of 117117879 is 978711711.

It is a cyclic number.

It is not a de Polignac number, because 117117879 - 2¹ = 117117877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117117879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117117877) 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, 4219 + ... + 15875.

It is an arithmetic number, because the mean of its divisors is an integer number (10387278).

Almost surely, 2^117117879 is an apocalyptic number.

117117879 is a deficient number, since it is larger than the sum of its proper divisors (49078569).

117117879 is a wasteful number, since it uses less digits than its factorization.

117117879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11874.

The product of its digits is 24696, while the sum is 42.

The square root of 117117879 is about 10822.1014133116. The cubic root of 117117879 is about 489.2615267930.

The spelling of 117117879 in words is "one hundred seventeen million, one hundred seventeen thousand, eight hundred seventy-nine".