117659609 has 4 divisors (see below), whose sum is σ = 123852240. Its totient is φ = 111466980.

The previous prime is 117659599. The next prime is 117659611. The reversal of 117659609 is 906956711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906956711 = 1459 ⋅621629.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117659609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117659609.

It is not an unprimeable number, because it can be changed into a prime (117659639) 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, 3096287 + ... + 3096324.

It is an arithmetic number, because the mean of its divisors is an integer number (30963060).

Almost surely, 2^117659609 is an apocalyptic number.

117659609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

117659609 is a deficient number, since it is larger than the sum of its proper divisors (6192631).

117659609 is an equidigital number, since it uses as much as digits as its factorization.

117659609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192630.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 117659609 is about 10847.1014100542. The cubic root of 117659609 is about 490.0147281426.

The spelling of 117659609 in words is "one hundred seventeen million, six hundred fifty-nine thousand, six hundred nine".