117164947 has 2 divisors, whose sum is σ = 117164948. Its totient is φ = 117164946.

The previous prime is 117164941. The next prime is 117164951. The reversal of 117164947 is 749461711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117164947 is a prime.

It is not a weakly prime, because it can be changed into another prime (117164941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58582473 + 58582474.

It is an arithmetic number, because the mean of its divisors is an integer number (58582474).

Almost surely, 2^117164947 is an apocalyptic number.

117164947 is a deficient number, since it is larger than the sum of its proper divisors (1).

117164947 is an equidigital number, since it uses as much as digits as its factorization.

117164947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 117164947 is about 10824.2758187326. The cubic root of 117164947 is about 489.3270604174.

The spelling of 117164947 in words is "one hundred seventeen million, one hundred sixty-four thousand, nine hundred forty-seven".