117117279 has 32 divisors (see below), whose sum is σ = 181601280. Its totient is φ = 74520000.

The previous prime is 117117223. The next prime is 117117289. The reversal of 117117279 is 972711711.

It is a happy number.

It is not a de Polignac number, because 117117279 - 2⁸ = 117117023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117117289) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 50904 + ... + 53154.

It is an arithmetic number, because the mean of its divisors is an integer number (5675040).

Almost surely, 2^117117279 is an apocalyptic number.

117117279 is a deficient number, since it is larger than the sum of its proper divisors (64484001).

117117279 is a wasteful number, since it uses less digits than its factorization.

117117279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348 (or 2342 counting only the distinct ones).

The product of its digits is 6174, while the sum is 36.

The square root of 117117279 is about 10822.0736922274. The cubic root of 117117279 is about 489.2606912888.

The spelling of 117117279 in words is "one hundred seventeen million, one hundred seventeen thousand, two hundred seventy-nine".