117812797 has 4 divisors (see below), whose sum is σ = 118423420. Its totient is φ = 117202176.

The previous prime is 117812789. The next prime is 117812801. The reversal of 117812797 is 797218711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797218711 = 23743 ⋅33577.

It can be written as a sum of positive squares in 2 ways, for example, as 29095236 + 88717561 = 5394^2 + 9419^2 .

It is a cyclic number.

It is not a de Polignac number, because 117812797 - 2³ = 117812789 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 (117812707) 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, 305022 + ... + 305407.

It is an arithmetic number, because the mean of its divisors is an integer number (29605855).

Almost surely, 2^117812797 is an apocalyptic number.

It is an amenable number.

117812797 is a deficient number, since it is larger than the sum of its proper divisors (610623).

117812797 is an equidigital number, since it uses as much as digits as its factorization.

117812797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610622.

The product of its digits is 49392, while the sum is 43.

The square root of 117812797 is about 10854.1603544447. The cubic root of 117812797 is about 490.2272956313.

The spelling of 117812797 in words is "one hundred seventeen million, eight hundred twelve thousand, seven hundred ninety-seven".