118772909 has 2 divisors, whose sum is σ = 118772910. Its totient is φ = 118772908.

The previous prime is 118772881. The next prime is 118772921. The reversal of 118772909 is 909277811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94517284 + 24255625 = 9722^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 118772909 - 2⁸ = 118772653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118772909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118772309) 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 as a sum of consecutive naturals, namely, 59386454 + 59386455.

It is an arithmetic number, because the mean of its divisors is an integer number (59386455).

Almost surely, 2^118772909 is an apocalyptic number.

It is an amenable number.

118772909 is a deficient number, since it is larger than the sum of its proper divisors (1).

118772909 is an equidigital number, since it uses as much as digits as its factorization.

118772909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 118772909 is about 10898.2984451702. The cubic root of 118772909 is about 491.5553921248. Note that the first 3 decimals are identical.

The spelling of 118772909 in words is "one hundred eighteen million, seven hundred seventy-two thousand, nine hundred nine".