208443 has 4 divisors (see below), whose sum is σ = 277928. Its totient is φ = 138960.

The previous prime is 208441. The next prime is 208457. The reversal of 208443 is 344802.

It is a happy number.

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

It is not a de Polignac number, because 208443 - 2¹ = 208441 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208441) 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, 34738 + ... + 34743.

It is an arithmetic number, because the mean of its divisors is an integer number (69482).

2²⁰⁸⁴⁴³ is an apocalyptic number.

208443 is a deficient number, since it is larger than the sum of its proper divisors (69485).

208443 is an equidigital number, since it uses as much as digits as its factorization.

208443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69484.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 208443 is about 456.5555825965. Note that the first 4 decimals coincide. The cubic root of 208443 is about 59.2919551870.

The spelling of 208443 in words is "two hundred eight thousand, four hundred forty-three".