115540979 has 2 divisors, whose sum is σ = 115540980. Its totient is φ = 115540978.

The previous prime is 115540967. The next prime is 115541003. The reversal of 115540979 is 979045511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115540979 - 2⁴ = 115540963 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115540679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57770489 + 57770490.

It is an arithmetic number, because the mean of its divisors is an integer number (57770490).

Almost surely, 2^115540979 is an apocalyptic number.

115540979 is a deficient number, since it is larger than the sum of its proper divisors (1).

115540979 is an equidigital number, since it uses as much as digits as its factorization.

115540979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 115540979 is about 10748.9989766489. The cubic root of 115540979 is about 487.0557569466.

The spelling of 115540979 in words is "one hundred fifteen million, five hundred forty thousand, nine hundred seventy-nine".