115439002409 has 4 divisors (see below), whose sum is σ = 118123630416. Its totient is φ = 112754374404.

The previous prime is 115439002361. The next prime is 115439002417. The reversal of 115439002409 is 904200934511.

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 a de Polignac number, because none of the positive numbers 2^k-115439002409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115439002439) 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, 1342313939 + ... + 1342314024.

It is an arithmetic number, because the mean of its divisors is an integer number (29530907604).

Almost surely, 2^115439002409 is an apocalyptic number.

It is an amenable number.

115439002409 is a deficient number, since it is larger than the sum of its proper divisors (2684628007).

115439002409 is an equidigital number, since it uses as much as digits as its factorization.

115439002409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684628006.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 115439002409 in words is "one hundred fifteen billion, four hundred thirty-nine million, two thousand, four hundred nine".