168959 has 4 divisors (see below), whose sum is σ = 193104. Its totient is φ = 144816.

The previous prime is 168943. The next prime is 168977. The reversal of 168959 is 959861.

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

It is not a de Polignac number, because 168959 - 2⁴ = 168943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168559) 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 3 ways as a sum of consecutive naturals, for example, 12062 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (48276).

2¹⁶⁸⁹⁵⁹ is an apocalyptic number.

168959 is a deficient number, since it is larger than the sum of its proper divisors (24145).

168959 is an equidigital number, since it uses as much as digits as its factorization.

168959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24144.

The product of its digits is 19440, while the sum is 38.

The square root of 168959 is about 411.0462261109. The cubic root of 168959 is about 55.2832767739.

Subtracting from 168959 its sum of digits (38), we obtain a square (168921 = 411²).

The spelling of 168959 in words is "one hundred sixty-eight thousand, nine hundred fifty-nine".