168939 has 8 divisors (see below), whose sum is σ = 250320. Its totient is φ = 112608.

The previous prime is 168937. The next prime is 168943. The reversal of 168939 is 939861.

It is not a de Polignac number, because 168939 - 2¹ = 168937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168937) 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 7 ways as a sum of consecutive naturals, for example, 3102 + ... + 3155.

It is an arithmetic number, because the mean of its divisors is an integer number (31290).

2¹⁶⁸⁹³⁹ is an apocalyptic number.

168939 is a deficient number, since it is larger than the sum of its proper divisors (81381).

168939 is an equidigital number, since it uses as much as digits as its factorization.

168939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266 (or 6260 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 168939 is about 411.0218972269. The cubic root of 168939 is about 55.2810953587.

It can be divided in two parts, 1689 and 39, that added together give a cube (1728 = 12³).

The spelling of 168939 in words is "one hundred sixty-eight thousand, nine hundred thirty-nine".