117774979 has 12 divisors (see below), whose sum is σ = 140192184. Its totient is φ = 98600544.

The previous prime is 117774971. The next prime is 117775027. The reversal of 117774979 is 979477711.

It is a happy number.

It is not a de Polignac number, because 117774979 - 2³ = 117774971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117774971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25842 + ... + 30055.

It is an arithmetic number, because the mean of its divisors is an integer number (11682682).

Almost surely, 2^117774979 is an apocalyptic number.

117774979 is a deficient number, since it is larger than the sum of its proper divisors (22417205).

117774979 is an equidigital number, since it uses as much as digits as its factorization.

117774979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55954 (or 55947 counting only the distinct ones).

The product of its digits is 777924, while the sum is 52.

The square root of 117774979 is about 10852.4181176363. The cubic root of 117774979 is about 490.1748355692.

The spelling of 117774979 in words is "one hundred seventeen million, seven hundred seventy-four thousand, nine hundred seventy-nine".