117989900 has 72 divisors (see below), whose sum is σ = 296751840. Its totient is φ = 39882240.

The previous prime is 117989891. The next prime is 117989903. The reversal of 117989900 is 9989711.

It is not an unprimeable number, because it can be changed into a prime (117989903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49946 + ... + 52254.

Almost surely, 2^117989900 is an apocalyptic number.

117989900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117989900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148375920).

117989900 is an abundant number, since it is smaller than the sum of its proper divisors (178761940).

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

117989900 is a wasteful number, since it uses less digits than its factorization.

117989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2396 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 117989900 is about 10862.3155910699. The cubic root of 117989900 is about 490.4728186378.

The spelling of 117989900 in words is "one hundred seventeen million, nine hundred eighty-nine thousand, nine hundred".