117156239 has 2 divisors, whose sum is σ = 117156240. Its totient is φ = 117156238.

The previous prime is 117156203. The next prime is 117156251. The reversal of 117156239 is 932651711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117156239 - 2¹² = 117152143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117156199 and 117156208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117156139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58578119 + 58578120.

It is an arithmetic number, because the mean of its divisors is an integer number (58578120).

Almost surely, 2^117156239 is an apocalyptic number.

117156239 is a deficient number, since it is larger than the sum of its proper divisors (1).

117156239 is an equidigital number, since it uses as much as digits as its factorization.

117156239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 35.

The square root of 117156239 is about 10823.8735672586. The cubic root of 117156239 is about 489.3149374354.

The spelling of 117156239 in words is "one hundred seventeen million, one hundred fifty-six thousand, two hundred thirty-nine".