115099865 has 8 divisors (see below), whose sum is σ = 139128840. Its totient is φ = 91407232.

The previous prime is 115099837. The next prime is 115099937. The reversal of 115099865 is 568990511.

It can be written as a sum of positive squares in 4 ways, for example, as 12138256 + 102961609 = 3484^2 + 10147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115099865 - 2⁸ = 115099609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83330 + ... + 84699.

It is an arithmetic number, because the mean of its divisors is an integer number (17391105).

Almost surely, 2^115099865 is an apocalyptic number.

It is an amenable number.

115099865 is a deficient number, since it is larger than the sum of its proper divisors (24028975).

115099865 is a wasteful number, since it uses less digits than its factorization.

115099865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168171.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 115099865 is about 10728.4605139787. The cubic root of 115099865 is about 486.4351369961.

The spelling of 115099865 in words is "one hundred fifteen million, ninety-nine thousand, eight hundred sixty-five".