117817967 has 2 divisors, whose sum is σ = 117817968. Its totient is φ = 117817966.

The previous prime is 117817963. The next prime is 117818009. The reversal of 117817967 is 769718711.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (769718711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117817967 - 2² = 117817963 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117817963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58908983 + 58908984.

It is an arithmetic number, because the mean of its divisors is an integer number (58908984).

Almost surely, 2^117817967 is an apocalyptic number.

117817967 is a deficient number, since it is larger than the sum of its proper divisors (1).

117817967 is an equidigital number, since it uses as much as digits as its factorization.

117817967 is an evil number, because the sum of its binary digits is even.

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

The square root of 117817967 is about 10854.3985093602. The cubic root of 117817967 is about 490.2344664370.

The spelling of 117817967 in words is "one hundred seventeen million, eight hundred seventeen thousand, nine hundred sixty-seven".