117997193 has 2 divisors, whose sum is σ = 117997194. Its totient is φ = 117997192.

The previous prime is 117997177. The next prime is 117997207. The reversal of 117997193 is 391799711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115842169 + 2155024 = 10763^2 + 1468^2 .

It is an emirp because it is prime and its reverse (391799711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117997193 - 2⁴ = 117997177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117997393) 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, 58998596 + 58998597.

It is an arithmetic number, because the mean of its divisors is an integer number (58998597).

Almost surely, 2^117997193 is an apocalyptic number.

It is an amenable number.

117997193 is a deficient number, since it is larger than the sum of its proper divisors (1).

117997193 is an equidigital number, since it uses as much as digits as its factorization.

117997193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107163, while the sum is 47.

The square root of 117997193 is about 10862.6512877842. The cubic root of 117997193 is about 490.4829238660.

The spelling of 117997193 in words is "one hundred seventeen million, nine hundred ninety-seven thousand, one hundred ninety-three".