117809179 has 2 divisors, whose sum is σ = 117809180. Its totient is φ = 117809178.

The previous prime is 117809171. The next prime is 117809183. The reversal of 117809179 is 971908711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117809179 - 2³ = 117809171 is a prime.

It is not a weakly prime, because it can be changed into another prime (117809171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58904589 + 58904590.

It is an arithmetic number, because the mean of its divisors is an integer number (58904590).

Almost surely, 2^117809179 is an apocalyptic number.

117809179 is a deficient number, since it is larger than the sum of its proper divisors (1).

117809179 is an equidigital number, since it uses as much as digits as its factorization.

117809179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 43.

The square root of 117809179 is about 10853.9936889608. The cubic root of 117809179 is about 490.2222773295. Note that the first 4 decimals are identical.

The spelling of 117809179 in words is "one hundred seventeen million, eight hundred nine thousand, one hundred seventy-nine".