115249789 has 2 divisors, whose sum is σ = 115249790. Its totient is φ = 115249788.

The previous prime is 115249751. The next prime is 115249829. The reversal of 115249789 is 987942511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 29539225 = 9258^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 115249789 - 2¹⁵ = 115217021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115349789) 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, 57624894 + 57624895.

It is an arithmetic number, because the mean of its divisors is an integer number (57624895).

Almost surely, 2^115249789 is an apocalyptic number.

It is an amenable number.

115249789 is a deficient number, since it is larger than the sum of its proper divisors (1).

115249789 is an equidigital number, since it uses as much as digits as its factorization.

115249789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 115249789 is about 10735.4454495377. The cubic root of 115249789 is about 486.6462483354.

The spelling of 115249789 in words is "one hundred fifteen million, two hundred forty-nine thousand, seven hundred eighty-nine".