80439 has 4 divisors (see below), whose sum is σ = 107256. Its totient is φ = 53624.

The previous prime is 80429. The next prime is 80447. The reversal of 80439 is 93408.

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

It is a cyclic number.

It is not a de Polignac number, because 80439 - 2⁵ = 80407 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13404 + ... + 13409.

It is an arithmetic number, because the mean of its divisors is an integer number (26814).

2⁸⁰⁴³⁹ is an apocalyptic number.

80439 is a deficient number, since it is larger than the sum of its proper divisors (26817).

80439 is a wasteful number, since it uses less digits than its factorization.

80439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26816.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 80439 is about 283.6177004349. The cubic root of 80439 is about 43.1673664726.

The spelling of 80439 in words is "eighty thousand, four hundred thirty-nine".