118902209 has 12 divisors (see below), whose sum is σ = 127284480. Its totient is φ = 111033720.

The previous prime is 118902193. The next prime is 118902211. The reversal of 118902209 is 902209811.

It is a happy number.

It is not a de Polignac number, because 118902209 - 2⁴ = 118902193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118902239) 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 in 11 ways as a sum of consecutive naturals, for example, 23312 + ... + 27950.

It is an arithmetic number, because the mean of its divisors is an integer number (10607040).

Almost surely, 2^118902209 is an apocalyptic number.

118902209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

118902209 is a deficient number, since it is larger than the sum of its proper divisors (8382271).

118902209 is an equidigital number, since it uses as much as digits as its factorization.

118902209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748 (or 4729 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 118902209 is about 10904.2289502743. The cubic root of 118902209 is about 491.7337017603.

The spelling of 118902209 in words is "one hundred eighteen million, nine hundred two thousand, two hundred nine".