118844009 has 2 divisors, whose sum is σ = 118844010. Its totient is φ = 118844008.

The previous prime is 118843981. The next prime is 118844017. The reversal of 118844009 is 900448811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 56670784 = 7885^2 + 7528^2 .

It is a cyclic number.

It is not a de Polignac number, because 118844009 - 2¹² = 118839913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118844009.

It is not a weakly prime, because it can be changed into another prime (118844029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59422004 + 59422005.

It is an arithmetic number, because the mean of its divisors is an integer number (59422005).

Almost surely, 2^118844009 is an apocalyptic number.

It is an amenable number.

118844009 is a deficient number, since it is larger than the sum of its proper divisors (1).

118844009 is an equidigital number, since it uses as much as digits as its factorization.

118844009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 118844009 is about 10901.5599342479. The cubic root of 118844009 is about 491.6534577447.

The spelling of 118844009 in words is "one hundred eighteen million, eight hundred forty-four thousand, nine".