115859977 has 2 divisors, whose sum is σ = 115859978. Its totient is φ = 115859976.

The previous prime is 115859971. The next prime is 115859999. The reversal of 115859977 is 779958511.

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., 61528336 + 54331641 = 7844^2 + 7371^2 .

It is an emirp because it is prime and its reverse (779958511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115859977 - 2¹⁵ = 115827209 is a prime.

It is not a weakly prime, because it can be changed into another prime (115859971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57929988 + 57929989.

It is an arithmetic number, because the mean of its divisors is an integer number (57929989).

Almost surely, 2^115859977 is an apocalyptic number.

It is an amenable number.

115859977 is a deficient number, since it is larger than the sum of its proper divisors (1).

115859977 is an equidigital number, since it uses as much as digits as its factorization.

115859977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 52.

The square root of 115859977 is about 10763.8272468486. The cubic root of 115859977 is about 487.5035837563.

The spelling of 115859977 in words is "one hundred fifteen million, eight hundred fifty-nine thousand, nine hundred seventy-seven".