117564979 has 8 divisors (see below), whose sum is σ = 142263648. Its totient is φ = 94842240.

The previous prime is 117564977. The next prime is 117565003. The reversal of 117564979 is 979465711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117564979 - 2¹ = 117564977 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (117564973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493852 + ... + 494089.

It is an arithmetic number, because the mean of its divisors is an integer number (17782956).

Almost surely, 2^117564979 is an apocalyptic number.

117564979 is a deficient number, since it is larger than the sum of its proper divisors (24698669).

117564979 is an equidigital number, since it uses as much as digits as its factorization.

117564979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987965.

The product of its digits is 476280, while the sum is 49.

The square root of 117564979 is about 10842.7385378418. The cubic root of 117564979 is about 489.8833249901.

The spelling of 117564979 in words is "one hundred seventeen million, five hundred sixty-four thousand, nine hundred seventy-nine".