117959785 has 4 divisors (see below), whose sum is σ = 141551748. Its totient is φ = 94367824.

The previous prime is 117959783. The next prime is 117959827. The reversal of 117959785 is 587959711.

It is a happy number.

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 87665769 + 30294016 = 9363^2 + 5504^2 .

It is a cyclic number.

It is not a de Polignac number, because 117959785 - 2¹ = 117959783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117959783) 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, 11795974 + ... + 11795983.

It is an arithmetic number, because the mean of its divisors is an integer number (35387937).

Almost surely, 2^117959785 is an apocalyptic number.

It is an amenable number.

117959785 is a deficient number, since it is larger than the sum of its proper divisors (23591963).

117959785 is an equidigital number, since it uses as much as digits as its factorization.

117959785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23591962.

The product of its digits is 793800, while the sum is 52.

The square root of 117959785 is about 10860.9292880490. The cubic root of 117959785 is about 490.4310866880.

The spelling of 117959785 in words is "one hundred seventeen million, nine hundred fifty-nine thousand, seven hundred eighty-five".