115844409 has 24 divisors (see below), whose sum is σ = 178918272. Its totient is φ = 71971200.

The previous prime is 115844401. The next prime is 115844413. The reversal of 115844409 is 904448511.

It is not a de Polignac number, because 115844409 - 2³ = 115844401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115844401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12084 + ... + 19434.

It is an arithmetic number, because the mean of its divisors is an integer number (7454928).

Almost surely, 2^115844409 is an apocalyptic number.

It is an amenable number.

115844409 is a deficient number, since it is larger than the sum of its proper divisors (63073863).

115844409 is a wasteful number, since it uses less digits than its factorization.

115844409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477 (or 7474 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 115844409 is about 10763.1040597032. The cubic root of 115844409 is about 487.4817476401.

The spelling of 115844409 in words is "one hundred fifteen million, eight hundred forty-four thousand, four hundred nine".