117922897 has 4 divisors (see below), whose sum is σ = 124859556. Its totient is φ = 110986240.

The previous prime is 117922879. The next prime is 117922901. The reversal of 117922897 is 798229711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40500496 + 77422401 = 6364^2 + 8799^2 .

It is a cyclic number.

It is not a de Polignac number, because 117922897 - 2²³ = 109534289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117922837) 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 in 3 ways as a sum of consecutive naturals, for example, 3468304 + ... + 3468337.

It is an arithmetic number, because the mean of its divisors is an integer number (31214889).

Almost surely, 2^117922897 is an apocalyptic number.

117922897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

117922897 is a deficient number, since it is larger than the sum of its proper divisors (6936659).

117922897 is an equidigital number, since it uses as much as digits as its factorization.

117922897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936658.

The product of its digits is 127008, while the sum is 46.

The square root of 117922897 is about 10859.2309580375. The cubic root of 117922897 is about 490.3799593538.

The spelling of 117922897 in words is "one hundred seventeen million, nine hundred twenty-two thousand, eight hundred ninety-seven".