115978099 has 8 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 111376200.

The previous prime is 115978073. The next prime is 115978123. The reversal of 115978099 is 990879511.

It is a happy number.

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

It is not a de Polignac number, because 115978099 - 2¹⁵ = 115945331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115978039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10219 + ... + 18340.

It is an arithmetic number, because the mean of its divisors is an integer number (15079680).

Almost surely, 2^115978099 is an apocalyptic number.

115978099 is a deficient number, since it is larger than the sum of its proper divisors (4659341).

115978099 is a wasteful number, since it uses less digits than its factorization.

115978099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28721.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 115978099 is about 10769.3128378741. The cubic root of 115978099 is about 487.6692013151.

The spelling of 115978099 in words is "one hundred fifteen million, nine hundred seventy-eight thousand, ninety-nine".