115802209 has 4 divisors (see below), whose sum is σ = 116512816. Its totient is φ = 115091604.

The previous prime is 115802177. The next prime is 115802231. The reversal of 115802209 is 902208511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115802209 - 2⁵ = 115802177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115812209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355059 + ... + 355384.

It is an arithmetic number, because the mean of its divisors is an integer number (29128204).

Almost surely, 2^115802209 is an apocalyptic number.

It is an amenable number.

115802209 is a deficient number, since it is larger than the sum of its proper divisors (710607).

115802209 is an equidigital number, since it uses as much as digits as its factorization.

115802209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710606.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 115802209 is about 10761.1434801326. The cubic root of 115802209 is about 487.4225468886.

The spelling of 115802209 in words is "one hundred fifteen million, eight hundred two thousand, two hundred nine".