115236409 has 2 divisors, whose sum is σ = 115236410. Its totient is φ = 115236408.

The previous prime is 115236403. The next prime is 115236419. The reversal of 115236409 is 904632511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105124009 + 10112400 = 10253^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 115236409 - 2²³ = 106847801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115236403) 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 as a sum of consecutive naturals, namely, 57618204 + 57618205.

It is an arithmetic number, because the mean of its divisors is an integer number (57618205).

Almost surely, 2^115236409 is an apocalyptic number.

It is an amenable number.

115236409 is a deficient number, since it is larger than the sum of its proper divisors (1).

115236409 is an equidigital number, since it uses as much as digits as its factorization.

115236409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 115236409 is about 10734.8222621523. The cubic root of 115236409 is about 486.6274151012.

The spelling of 115236409 in words is "one hundred fifteen million, two hundred thirty-six thousand, four hundred nine".