117192217 has 2 divisors, whose sum is σ = 117192218. Its totient is φ = 117192216.

The previous prime is 117192149. The next prime is 117192221. The reversal of 117192217 is 712291711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84713616 + 32478601 = 9204^2 + 5699^2 .

It is an emirp because it is prime and its reverse (712291711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117192217 - 2²³ = 108803609 is a prime.

It is not a weakly prime, because it can be changed into another prime (117193217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58596108 + 58596109.

It is an arithmetic number, because the mean of its divisors is an integer number (58596109).

Almost surely, 2^117192217 is an apocalyptic number.

It is an amenable number.

117192217 is a deficient number, since it is larger than the sum of its proper divisors (1).

117192217 is an equidigital number, since it uses as much as digits as its factorization.

117192217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 31.

The square root of 117192217 is about 10825.5354140107. The cubic root of 117192217 is about 489.3650209000.

The spelling of 117192217 in words is "one hundred seventeen million, one hundred ninety-two thousand, two hundred seventeen".