117922879 has 2 divisors, whose sum is σ = 117922880. Its totient is φ = 117922878.

The previous prime is 117922877. The next prime is 117922901. The reversal of 117922879 is 978229711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117922879 - 2¹ = 117922877 is a prime.

Together with 117922877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117922877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58961439 + 58961440.

It is an arithmetic number, because the mean of its divisors is an integer number (58961440).

Almost surely, 2^117922879 is an apocalyptic number.

117922879 is a deficient number, since it is larger than the sum of its proper divisors (1).

117922879 is an equidigital number, since it uses as much as digits as its factorization.

117922879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 46.

The square root of 117922879 is about 10859.2301292495. The cubic root of 117922879 is about 490.3799344029.

The spelling of 117922879 in words is "one hundred seventeen million, nine hundred twenty-two thousand, eight hundred seventy-nine".