80839 has 4 divisors (see below), whose sum is σ = 88200. Its totient is φ = 73480.

The previous prime is 80833. The next prime is 80849. The reversal of 80839 is 93808.

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

It is not a de Polignac number, because 80839 - 2³ = 80831 is a prime.

It is a Duffinian number.

80839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80831) 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, 3664 + ... + 3685.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2⁸⁰⁸³⁹ is an apocalyptic number.

80839 is a deficient number, since it is larger than the sum of its proper divisors (7361).

80839 is a wasteful number, since it uses less digits than its factorization.

80839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7360.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80839 is about 284.3220005557. The cubic root of 80839 is about 43.2388011590.

It can be divided in two parts, 80 and 839, that added together give a palindrome (919).

The spelling of 80839 in words is "eighty thousand, eight hundred thirty-nine".