117239189 has 2 divisors, whose sum is σ = 117239190. Its totient is φ = 117239188.

The previous prime is 117239153. The next prime is 117239263. The reversal of 117239189 is 981932711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 58564 = 10825^2 + 242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117239189 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117239989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58619594 + 58619595.

It is an arithmetic number, because the mean of its divisors is an integer number (58619595).

Almost surely, 2^117239189 is an apocalyptic number.

It is an amenable number.

117239189 is a deficient number, since it is larger than the sum of its proper divisors (1).

117239189 is an equidigital number, since it uses as much as digits as its factorization.

117239189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 41.

The square root of 117239189 is about 10827.7046967490. The cubic root of 117239189 is about 489.4303932258.

The spelling of 117239189 in words is "one hundred seventeen million, two hundred thirty-nine thousand, one hundred eighty-nine".