115289889 has 32 divisors (see below), whose sum is σ = 182168448. Its totient is φ = 64468800.

The previous prime is 115289879. The next prime is 115289897. The reversal of 115289889 is 988982511.

It is not a de Polignac number, because 115289889 - 2⁴ = 115289873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115289879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50799 + ... + 53019.

It is an arithmetic number, because the mean of its divisors is an integer number (5692764).

Almost surely, 2^115289889 is an apocalyptic number.

It is an amenable number.

115289889 is a deficient number, since it is larger than the sum of its proper divisors (66878559).

115289889 is a wasteful number, since it uses less digits than its factorization.

115289889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270 (or 2248 counting only the distinct ones).

The product of its digits is 414720, while the sum is 51.

The square root of 115289889 is about 10737.3129320142. The cubic root of 115289889 is about 486.7026830062.

The spelling of 115289889 in words is "one hundred fifteen million, two hundred eighty-nine thousand, eight hundred eighty-nine".