117138944 has 40 divisors (see below), whose sum is σ = 252067200. Its totient is φ = 54061056.

The previous prime is 117138911. The next prime is 117138949. The reversal of 117138944 is 449831711.

It is a junction number, because it is equal to n+sod(n) for n = 117138898 and 117138907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117138949) 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 in 3 ways as a sum of consecutive naturals, for example, 2144 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (6301680).

Almost surely, 2^117138944 is an apocalyptic number.

It is an amenable number.

117138944 is an abundant number, since it is smaller than the sum of its proper divisors (134928256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117138944 is an equidigital number, since it uses as much as digits as its factorization.

117138944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17630 (or 17614 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 117138944 is about 10823.0746093705. The cubic root of 117138944 is about 489.2908581422.

The spelling of 117138944 in words is "one hundred seventeen million, one hundred thirty-eight thousand, nine hundred forty-four".