68439 has 8 divisors (see below), whose sum is σ = 104320. Its totient is φ = 39096.

The previous prime is 68437. The next prime is 68443. The reversal of 68439 is 93486.

68439 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 68439 - 2¹ = 68437 is a prime.

It is a Duffinian number.

68439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (13040).

2⁶⁸⁴³⁹ is an apocalyptic number.

68439 is a deficient number, since it is larger than the sum of its proper divisors (35881).

68439 is a wasteful number, since it uses less digits than its factorization.

68439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269.

The product of its digits is 5184, while the sum is 30.

The square root of 68439 is about 261.6084861009. The cubic root of 68439 is about 40.9041982925.

The spelling of 68439 in words is "sixty-eight thousand, four hundred thirty-nine".