117786971 has 2 divisors, whose sum is σ = 117786972. Its totient is φ = 117786970.

The previous prime is 117786953. The next prime is 117787031. The reversal of 117786971 is 179687711.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117786971 - 2²² = 113592667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117786901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58893485 + 58893486.

It is an arithmetic number, because the mean of its divisors is an integer number (58893486).

Almost surely, 2^117786971 is an apocalyptic number.

117786971 is a deficient number, since it is larger than the sum of its proper divisors (1).

117786971 is an equidigital number, since it uses as much as digits as its factorization.

117786971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 47.

The square root of 117786971 is about 10852.9706071656. The cubic root of 117786971 is about 490.1914717488.

The spelling of 117786971 in words is "one hundred seventeen million, seven hundred eighty-six thousand, nine hundred seventy-one".