117288809 has 12 divisors (see below), whose sum is σ = 129595200. Its totient is φ = 106068600.

The previous prime is 117288757. The next prime is 117288827. The reversal of 117288809 is 908882711.

It is not a de Polignac number, because 117288809 - 2⁸ = 117288553 is a prime.

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 117288809.

It is not an unprimeable number, because it can be changed into a prime (117288859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21644 + ... + 26514.

It is an arithmetic number, because the mean of its divisors is an integer number (10799600).

Almost surely, 2^117288809 is an apocalyptic number.

It is an amenable number.

117288809 is a deficient number, since it is larger than the sum of its proper divisors (12306391).

117288809 is a wasteful number, since it uses less digits than its factorization.

117288809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092 (or 5081 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 117288809 is about 10829.9957987065. The cubic root of 117288809 is about 489.4994318893.

The spelling of 117288809 in words is "one hundred seventeen million, two hundred eighty-eight thousand, eight hundred nine".