117808971 has 8 divisors (see below), whose sum is σ = 179518464. Its totient is φ = 67319400.

The previous prime is 117808939. The next prime is 117809023. The reversal of 117808971 is 179808711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117808971 - 2⁵ = 117808939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117808571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804955 + ... + 2804996.

It is an arithmetic number, because the mean of its divisors is an integer number (22439808).

Almost surely, 2^117808971 is an apocalyptic number.

117808971 is a deficient number, since it is larger than the sum of its proper divisors (61709493).

117808971 is an equidigital number, since it uses as much as digits as its factorization.

117808971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609961.

The product of its (nonzero) digits is 28224, while the sum is 42.

The square root of 117808971 is about 10853.9841072299. The cubic root of 117808971 is about 490.2219888225.

The spelling of 117808971 in words is "one hundred seventeen million, eight hundred eight thousand, nine hundred seventy-one".