115863939 has 10 divisors (see below), whose sum is σ = 173080820. Its totient is φ = 77242572.

The previous prime is 115863931. The next prime is 115863941. The reversal of 115863939 is 939368511.

115863939 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 639 + 3 + 9 = 666.

It is not a de Polignac number, because 115863939 - 2³ = 115863931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115863894 and 115863903.

It is not an unprimeable number, because it can be changed into a prime (115863931) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 715129 + ... + 715290.

It is an arithmetic number, because the mean of its divisors is an integer number (17308082).

Almost surely, 2^115863939 is an apocalyptic number.

115863939 is a deficient number, since it is larger than the sum of its proper divisors (57216881).

115863939 is an equidigital number, since it uses as much as digits as its factorization.

115863939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430431 (or 1430422 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 115863939 is about 10764.0112876195. The cubic root of 115863939 is about 487.5091406570.

The spelling of 115863939 in words is "one hundred fifteen million, eight hundred sixty-three thousand, nine hundred thirty-nine".