117899136 has 96 divisors (see below), whose sum is σ = 345847320. Its totient is φ = 38538240.

The previous prime is 117899129. The next prime is 117899137. The reversal of 117899136 is 631998711.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 117899091 and 117899100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117899137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60091 + ... + 62021.

Almost surely, 2^117899136 is an apocalyptic number.

117899136 is a gapful number since it is divisible by the number (16) 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 117899136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172923660).

117899136 is an abundant number, since it is smaller than the sum of its proper divisors (227948184).

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

117899136 is a wasteful number, since it uses less digits than its factorization.

117899136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1989 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 117899136 is about 10858.1368567540. The cubic root of 117899136 is about 490.3470205969.

The spelling of 117899136 in words is "one hundred seventeen million, eight hundred ninety-nine thousand, one hundred thirty-six".