208939 has 4 divisors (see below), whose sum is σ = 214624. Its totient is φ = 203256.

The previous prime is 208933. The next prime is 208961. The reversal of 208939 is 939802.

It is a happy number.

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 208939 - 2³ = 208931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208939.

It is not an unprimeable number, because it can be changed into a prime (208931) 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, 2787 + ... + 2860.

It is an arithmetic number, because the mean of its divisors is an integer number (53656).

2²⁰⁸⁹³⁹ is an apocalyptic number.

208939 is a deficient number, since it is larger than the sum of its proper divisors (5685).

208939 is an equidigital number, since it uses as much as digits as its factorization.

208939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 208939 is about 457.0984576653. The cubic root of 208939 is about 59.3389472728.

It can be divided in two parts, 20893 and 9, that added together give a palindrome (20902).

The spelling of 208939 in words is "two hundred eight thousand, nine hundred thirty-nine".