118844909 has 8 divisors (see below), whose sum is σ = 126058680. Its totient is φ = 111655936.

The previous prime is 118844893. The next prime is 118844963. The reversal of 118844909 is 909448811.

It can be written as a sum of positive squares in 4 ways, for example, as 9746884 + 109098025 = 3122^2 + 10445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118844909 - 2⁴ = 118844893 is a prime.

It is a super-2 number, since 2×118844909² = 28248224790436562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118844909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118844009) 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 in 7 ways as a sum of consecutive naturals, for example, 4187 + ... + 15975.

It is an arithmetic number, because the mean of its divisors is an integer number (15757335).

Almost surely, 2^118844909 is an apocalyptic number.

It is an amenable number.

118844909 is a deficient number, since it is larger than the sum of its proper divisors (7213771).

118844909 is a wasteful number, since it uses less digits than its factorization.

118844909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12399.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 118844909 is about 10901.6012126660. The cubic root of 118844909 is about 491.6546988309.

The spelling of 118844909 in words is "one hundred eighteen million, eight hundred forty-four thousand, nine hundred nine".