115932409 has 4 divisors (see below), whose sum is σ = 118399104. Its totient is φ = 113465716.

The previous prime is 115932373. The next prime is 115932413. The reversal of 115932409 is 904239511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115932409 - 2²³ = 107543801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115932499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233277 + ... + 1233370.

It is an arithmetic number, because the mean of its divisors is an integer number (29599776).

Almost surely, 2^115932409 is an apocalyptic number.

It is an amenable number.

115932409 is a deficient number, since it is larger than the sum of its proper divisors (2466695).

115932409 is an equidigital number, since it uses as much as digits as its factorization.

115932409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466694.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 115932409 is about 10767.1913236461. The cubic root of 115932409 is about 487.6051532100.

The spelling of 115932409 in words is "one hundred fifteen million, nine hundred thirty-two thousand, four hundred nine".