117299621 has 2 divisors, whose sum is σ = 117299622. Its totient is φ = 117299620.

The previous prime is 117299617. The next prime is 117299641. The reversal of 117299621 is 126992711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 11826721 = 10270^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 117299621 - 2² = 117299617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117299641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58649810 + 58649811.

It is an arithmetic number, because the mean of its divisors is an integer number (58649811).

Almost surely, 2^117299621 is an apocalyptic number.

It is an amenable number.

117299621 is a deficient number, since it is larger than the sum of its proper divisors (1).

117299621 is an equidigital number, since it uses as much as digits as its factorization.

117299621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 117299621 is about 10830.4949563720. The cubic root of 117299621 is about 489.5144725548.

The spelling of 117299621 in words is "one hundred seventeen million, two hundred ninety-nine thousand, six hundred twenty-one".