117389189 has 2 divisors, whose sum is σ = 117389190. Its totient is φ = 117389188.

The previous prime is 117389149. The next prime is 117389213. The reversal of 117389189 is 981983711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100661089 + 16728100 = 10033^2 + 4090^2 .

It is a cyclic number.

It is not a de Polignac number, because 117389189 - 2⁸ = 117388933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117389149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58694594 + 58694595.

It is an arithmetic number, because the mean of its divisors is an integer number (58694595).

Almost surely, 2^117389189 is an apocalyptic number.

It is an amenable number.

117389189 is a deficient number, since it is larger than the sum of its proper divisors (1).

117389189 is an equidigital number, since it uses as much as digits as its factorization.

117389189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 47.

The square root of 117389189 is about 10834.6291583976. The cubic root of 117389189 is about 489.6390358367.

The spelling of 117389189 in words is "one hundred seventeen million, three hundred eighty-nine thousand, one hundred eighty-nine".