115424309 has 16 divisors (see below), whose sum is σ = 154976640. Its totient is φ = 83021760.

The previous prime is 115424303. The next prime is 115424347. The reversal of 115424309 is 903424511.

It is a cyclic number.

It is not a de Polignac number, because 115424309 - 2¹⁶ = 115358773 is a prime.

It is a super-2 number, since 2×115424309² = 26645542216254962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115424303) 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, 56654 + ... + 58655.

It is an arithmetic number, because the mean of its divisors is an integer number (9686040).

Almost surely, 2^115424309 is an apocalyptic number.

It is an amenable number.

115424309 is a deficient number, since it is larger than the sum of its proper divisors (39552331).

115424309 is a wasteful number, since it uses less digits than its factorization.

115424309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115340.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 115424309 is about 10743.5705889616. The cubic root of 115424309 is about 486.8917633775.

It can be divided in two parts, 11542 and 4309, that added together give a palindrome (15851).

The spelling of 115424309 in words is "one hundred fifteen million, four hundred twenty-four thousand, three hundred nine".