117804979 has 2 divisors, whose sum is σ = 117804980. Its totient is φ = 117804978.

The previous prime is 117804923. The next prime is 117805001. The reversal of 117804979 is 979408711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117804979 is a prime.

It is not a weakly prime, because it can be changed into another prime (117805979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58902489 + 58902490.

It is an arithmetic number, because the mean of its divisors is an integer number (58902490).

Almost surely, 2^117804979 is an apocalyptic number.

117804979 is a deficient number, since it is larger than the sum of its proper divisors (1).

117804979 is an equidigital number, since it uses as much as digits as its factorization.

117804979 is an odious number, because the sum of its binary digits is odd.

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

The square root of 117804979 is about 10853.8002100647. The cubic root of 117804979 is about 490.2164516430.

The spelling of 117804979 in words is "one hundred seventeen million, eight hundred four thousand, nine hundred seventy-nine".