83439 has 12 divisors (see below), whose sum is σ = 123136. Its totient is φ = 54432.

The previous prime is 83437. The next prime is 83443. The reversal of 83439 is 93438.

It is not a de Polignac number, because 83439 - 2¹ = 83437 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83431) 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 11 ways as a sum of consecutive naturals, for example, 594 + ... + 720.

2⁸³⁴³⁹ is an apocalyptic number.

83439 is a deficient number, since it is larger than the sum of its proper divisors (39697).

83439 is a wasteful number, since it uses less digits than its factorization.

83439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 203 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 83439 is about 288.8580966495. The cubic root of 83439 is about 43.6974771063.

Subtracting 83439 from its reverse (93438), we obtain a palindrome (9999).

The spelling of 83439 in words is "eighty-three thousand, four hundred thirty-nine".