115391249 has 2 divisors, whose sum is σ = 115391250. Its totient is φ = 115391248.

The previous prime is 115391239. The next prime is 115391279. The reversal of 115391249 is 942193511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81577024 + 33814225 = 9032^2 + 5815^2 .

It is a cyclic number.

It is not a de Polignac number, because 115391249 - 2⁴ = 115391233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115391239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57695624 + 57695625.

It is an arithmetic number, because the mean of its divisors is an integer number (57695625).

Almost surely, 2^115391249 is an apocalyptic number.

It is an amenable number.

115391249 is a deficient number, since it is larger than the sum of its proper divisors (1).

115391249 is an equidigital number, since it uses as much as digits as its factorization.

115391249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 35.

The square root of 115391249 is about 10742.0318841456. The cubic root of 115391249 is about 486.8452735208.

The spelling of 115391249 in words is "one hundred fifteen million, three hundred ninety-one thousand, two hundred forty-nine".