168305979 has 4 divisors (see below), whose sum is σ = 224407976. Its totient is φ = 112203984.

The previous prime is 168305957. The next prime is 168305983. The reversal of 168305979 is 979503861.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 168305979 - 2⁸ = 168305723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168305279) 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 3 ways as a sum of consecutive naturals, for example, 28050994 + ... + 28050999.

It is an arithmetic number, because the mean of its divisors is an integer number (56101994).

Almost surely, 2^168305979 is an apocalyptic number.

168305979 is a deficient number, since it is larger than the sum of its proper divisors (56101997).

168305979 is an equidigital number, since it uses as much as digits as its factorization.

168305979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56101996.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 168305979 is about 12973.2794234920. The cubic root of 168305979 is about 552.1196213398.

The spelling of 168305979 in words is "one hundred sixty-eight million, three hundred five thousand, nine hundred seventy-nine".