115924987 has 4 divisors (see below), whose sum is σ = 115969176. Its totient is φ = 115880800.

The previous prime is 115924981. The next prime is 115924997. The reversal of 115924987 is 789429511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115924987 is a prime.

It is a super-2 number, since 2×115924987² = 26877205221900338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115924981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17893 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (28992294).

Almost surely, 2^115924987 is an apocalyptic number.

115924987 is a deficient number, since it is larger than the sum of its proper divisors (44189).

115924987 is an equidigital number, since it uses as much as digits as its factorization.

115924987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44188.

The product of its digits is 181440, while the sum is 46.

The square root of 115924987 is about 10766.8466600022. The cubic root of 115924987 is about 487.5947474839.

The spelling of 115924987 in words is "one hundred fifteen million, nine hundred twenty-four thousand, nine hundred eighty-seven".