115989117 has 16 divisors (see below), whose sum is σ = 159195072. Its totient is φ = 75064320.

The previous prime is 115989077. The next prime is 115989119. The reversal of 115989117 is 711989511.

It is not a de Polignac number, because 115989117 - 2¹⁴ = 115972733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115989119) 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, 63142 + ... + 64952.

It is an arithmetic number, because the mean of its divisors is an integer number (9949692).

Almost surely, 2^115989117 is an apocalyptic number.

It is an amenable number.

115989117 is a deficient number, since it is larger than the sum of its proper divisors (43205955).

115989117 is a wasteful number, since it uses less digits than its factorization.

115989117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428.

The product of its digits is 22680, while the sum is 42.

The square root of 115989117 is about 10769.8243718271. The cubic root of 115989117 is about 487.6846437971.

The spelling of 115989117 in words is "one hundred fifteen million, nine hundred eighty-nine thousand, one hundred seventeen".