115328809 has 2 divisors, whose sum is σ = 115328810. Its totient is φ = 115328808.

The previous prime is 115328783. The next prime is 115328821. The reversal of 115328809 is 908823511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96432400 + 18896409 = 9820^2 + 4347^2 .

It is an emirp because it is prime and its reverse (908823511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115328809 - 2²³ = 106940201 is a prime.

It is equal to p_6590395 and since 115328809 and 6590395 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (115328869) 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, 57664404 + 57664405.

It is an arithmetic number, because the mean of its divisors is an integer number (57664405).

Almost surely, 2^115328809 is an apocalyptic number.

It is an amenable number.

115328809 is a deficient number, since it is larger than the sum of its proper divisors (1).

115328809 is an equidigital number, since it uses as much as digits as its factorization.

115328809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 115328809 is about 10739.1251505884. The cubic root of 115328809 is about 486.7574444932.

The spelling of 115328809 in words is "one hundred fifteen million, three hundred twenty-eight thousand, eight hundred nine".