204443 has 2 divisors, whose sum is σ = 204444. Its totient is φ = 204442.

The previous prime is 204439. The next prime is 204461. The reversal of 204443 is 344402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204443 - 2² = 204439 is a prime.

It is not a weakly prime, because it can be changed into another prime (204143) 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 as a sum of consecutive naturals, namely, 102221 + 102222.

It is an arithmetic number, because the mean of its divisors is an integer number (102222).

2²⁰⁴⁴⁴³ is an apocalyptic number.

204443 is a deficient number, since it is larger than the sum of its proper divisors (1).

204443 is an equidigital number, since it uses as much as digits as its factorization.

204443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 204443 is about 452.1537349177. The cubic root of 204443 is about 58.9102340775.

Adding to 204443 its reverse (344402), we get a palindrome (548845).

The spelling of 204443 in words is "two hundred four thousand, four hundred forty-three", and thus it is an iban number.