117288899 has 24 divisors (see below), whose sum is σ = 155590848. Its totient is φ = 87333120.

The previous prime is 117288887. The next prime is 117288929. The reversal of 117288899 is 998882711.

It is a happy number.

It is a Cunningham number, because it is equal to 10830²-1.

It is not a de Polignac number, because 117288899 - 2⁴ = 117288883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117288899.

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 23 ways as a sum of consecutive naturals, for example, 5414 + ... + 16244.

It is an arithmetic number, because the mean of its divisors is an integer number (6482952).

Almost surely, 2^117288899 is an apocalyptic number.

117288899 is a deficient number, since it is larger than the sum of its proper divisors (38301949).

117288899 is a wasteful number, since it uses less digits than its factorization.

117288899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875 (or 10868 counting only the distinct ones).

The product of its digits is 580608, while the sum is 53.

The square root of 117288899 is about 10829.9999538319. Note that the first 4 decimals coincide. The cubic root of 117288899 is about 489.4995570928.

The spelling of 117288899 in words is "one hundred seventeen million, two hundred eighty-eight thousand, eight hundred ninety-nine".