208439 has 8 divisors (see below), whose sum is σ = 259968. Its totient is φ = 162360.

The previous prime is 208433. The next prime is 208441. The reversal of 208439 is 934802.

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

It is not a de Polignac number, because 208439 - 2¹⁶ = 142903 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208433) 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 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (32496).

2²⁰⁸⁴³⁹ is an apocalyptic number.

208439 is a deficient number, since it is larger than the sum of its proper divisors (51529).

208439 is a wasteful number, since it uses less digits than its factorization.

208439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 208439 is about 456.5512019478. The cubic root of 208439 is about 59.2915759157.

The spelling of 208439 in words is "two hundred eight thousand, four hundred thirty-nine".