115809087 has 16 divisors (see below), whose sum is σ = 159782912. Its totient is φ = 74532960.

The previous prime is 115809079. The next prime is 115809091. The reversal of 115809087 is 780908511.

It is not a de Polignac number, because 115809087 - 2³ = 115809079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115809007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44013 + ... + 46569.

It is an arithmetic number, because the mean of its divisors is an integer number (9986432).

Almost surely, 2^115809087 is an apocalyptic number.

115809087 is a deficient number, since it is larger than the sum of its proper divisors (43973825).

115809087 is a wasteful number, since it uses less digits than its factorization.

115809087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 115809087 is about 10761.4630510911. The cubic root of 115809087 is about 487.4321967503.

The spelling of 115809087 in words is "one hundred fifteen million, eight hundred nine thousand, eighty-seven".