115784279 has 16 divisors (see below), whose sum is σ = 126932064. Its totient is φ = 104976000.

The previous prime is 115784239. The next prime is 115784311. The reversal of 115784279 is 972487511.

It is a cyclic number.

It is not a de Polignac number, because 115784279 - 2²⁴ = 99007063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115784239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213749 + ... + 214289.

It is an arithmetic number, because the mean of its divisors is an integer number (7933254).

Almost surely, 2^115784279 is an apocalyptic number.

115784279 is a deficient number, since it is larger than the sum of its proper divisors (11147785).

115784279 is a wasteful number, since it uses less digits than its factorization.

115784279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818.

The product of its digits is 141120, while the sum is 44.

The square root of 115784279 is about 10760.3103579776. The cubic root of 115784279 is about 487.3973892298.

The spelling of 115784279 in words is "one hundred fifteen million, seven hundred eighty-four thousand, two hundred seventy-nine".