117597839 has 4 divisors (see below), whose sum is σ = 117620040. Its totient is φ = 117575640.

The previous prime is 117597829. The next prime is 117597841. The reversal of 117597839 is 938795711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938795711 = 7 ⋅134113673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117597839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117597829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1997 + ... + 15465.

It is an arithmetic number, because the mean of its divisors is an integer number (29405010).

Almost surely, 2^117597839 is an apocalyptic number.

117597839 is a deficient number, since it is larger than the sum of its proper divisors (22201).

117597839 is an equidigital number, since it uses as much as digits as its factorization.

117597839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22200.

The product of its digits is 476280, while the sum is 50.

The square root of 117597839 is about 10844.2537318158. The cubic root of 117597839 is about 489.9289623521.

The spelling of 117597839 in words is "one hundred seventeen million, five hundred ninety-seven thousand, eight hundred thirty-nine".