204419 has 4 divisors (see below), whose sum is σ = 205344. Its totient is φ = 203496.

The previous prime is 204397. The next prime is 204427. The reversal of 204419 is 914402.

204419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 914402 = 2 ⋅457201.

It is a cyclic number.

It is not a de Polignac number, because 204419 - 2⁸ = 204163 is a prime.

It is a super-2 number, since 2×204419² = 83574255122, which contains 22 as substring.

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 204419.

It is not an unprimeable number, because it can be changed into a prime (204439) 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, 89 + ... + 645.

It is an arithmetic number, because the mean of its divisors is an integer number (51336).

2²⁰⁴⁴¹⁹ is an apocalyptic number.

204419 is a deficient number, since it is larger than the sum of its proper divisors (925).

204419 is an equidigital number, since it uses as much as digits as its factorization.

204419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 204419 is about 452.1271944929. The cubic root of 204419 is about 58.9079287879.

The spelling of 204419 in words is "two hundred four thousand, four hundred nineteen".