115109289 has 16 divisors (see below), whose sum is σ = 171159040. Its totient is φ = 76457520.

The previous prime is 115109279. The next prime is 115109299. The reversal of 115109289 is 982901511.

It is an interprime number because it is at equal distance from previous prime (115109279) and next prime (115109299).

It is not a de Polignac number, because 115109289 - 2⁷ = 115109161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115109249) 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, 217 + ... + 15174.

It is an arithmetic number, because the mean of its divisors is an integer number (10697440).

Almost surely, 2^115109289 is an apocalyptic number.

It is an amenable number.

115109289 is a deficient number, since it is larger than the sum of its proper divisors (56049751).

115109289 is a wasteful number, since it uses less digits than its factorization.

115109289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15677 (or 15671 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 115109289 is about 10728.8997105947. The cubic root of 115109289 is about 486.4484125391.

The spelling of 115109289 in words is "one hundred fifteen million, one hundred nine thousand, two hundred eighty-nine".