117173939 has 2 divisors, whose sum is σ = 117173940. Its totient is φ = 117173938.

The previous prime is 117173921. The next prime is 117173951. The reversal of 117173939 is 939371711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117173939 - 2²⁰ = 116125363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117173896 and 117173905.

It is not a weakly prime, because it can be changed into another prime (117173999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58586969 + 58586970.

It is an arithmetic number, because the mean of its divisors is an integer number (58586970).

Almost surely, 2^117173939 is an apocalyptic number.

117173939 is a deficient number, since it is larger than the sum of its proper divisors (1).

117173939 is an equidigital number, since it uses as much as digits as its factorization.

117173939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35721, while the sum is 41.

The square root of 117173939 is about 10824.6911734238. The cubic root of 117173939 is about 489.3395781441.

The spelling of 117173939 in words is "one hundred seventeen million, one hundred seventy-three thousand, nine hundred thirty-nine".