208839 has 8 divisors (see below), whose sum is σ = 282880. Its totient is φ = 137016.

The previous prime is 208837. The next prime is 208843. The reversal of 208839 is 938802.

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

It is not a de Polignac number, because 208839 - 2¹ = 208837 is a prime.

It is a super-2 number, since 2×208839² = 87227455842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208837) 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, 319 + ... + 720.

It is an arithmetic number, because the mean of its divisors is an integer number (35360).

2²⁰⁸⁸³⁹ is an apocalyptic number.

208839 is a deficient number, since it is larger than the sum of its proper divisors (74041).

208839 is a wasteful number, since it uses less digits than its factorization.

208839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 208839 is about 456.9890589500. The cubic root of 208839 is about 59.3294790522.

The spelling of 208839 in words is "two hundred eight thousand, eight hundred thirty-nine".