115660939 has 2 divisors, whose sum is σ = 115660940. Its totient is φ = 115660938.

The previous prime is 115660933. The next prime is 115661003. The reversal of 115660939 is 939066511.

It is a weak prime.

It is an emirp because it is prime and its reverse (939066511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115660939 is a prime.

It is not a weakly prime, because it can be changed into another prime (115660933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57830469 + 57830470.

It is an arithmetic number, because the mean of its divisors is an integer number (57830470).

Almost surely, 2^115660939 is an apocalyptic number.

115660939 is a deficient number, since it is larger than the sum of its proper divisors (1).

115660939 is an equidigital number, since it uses as much as digits as its factorization.

115660939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 115660939 is about 10754.5775835223. The cubic root of 115660939 is about 487.2242599319.

The spelling of 115660939 in words is "one hundred fifteen million, six hundred sixty thousand, nine hundred thirty-nine".