117197197 has 4 divisors (see below), whose sum is σ = 126212380. Its totient is φ = 108182016.

The previous prime is 117197189. The next prime is 117197221. The reversal of 117197197 is 791791711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791791711 = 17 ⋅46575983.

It can be written as a sum of positive squares in 2 ways, for example, as 70123876 + 47073321 = 8374^2 + 6861^2 .

It is a cyclic number.

It is not a de Polignac number, because 117197197 - 2³ = 117197189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117197177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507572 + ... + 4507597.

It is an arithmetic number, because the mean of its divisors is an integer number (31553095).

Almost surely, 2^117197197 is an apocalyptic number.

It is an amenable number.

117197197 is a deficient number, since it is larger than the sum of its proper divisors (9015183).

117197197 is an equidigital number, since it uses as much as digits as its factorization.

117197197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015182.

The product of its digits is 27783, while the sum is 43.

The square root of 117197197 is about 10825.7654232853. The cubic root of 117197197 is about 489.3719525415.

The spelling of 117197197 in words is "one hundred seventeen million, one hundred ninety-seven thousand, one hundred ninety-seven".