204469 has 4 divisors (see below), whose sum is σ = 206080. Its totient is φ = 202860.

The previous prime is 204461. The next prime is 204481. The reversal of 204469 is 964402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204469 - 2³ = 204461 is a prime.

It is a super-2 number, since 2×204469² = 83615143922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 0 + 4 + 4⁸ + 6⁵ + 9² .

It is a Duffinian number.

204469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204461) 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, 597 + ... + 874.

It is an arithmetic number, because the mean of its divisors is an integer number (51520).

2²⁰⁴⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

204469 is a deficient number, since it is larger than the sum of its proper divisors (1611).

204469 is a wasteful number, since it uses less digits than its factorization.

204469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 204469 is about 452.1824852866. The cubic root of 204469 is about 58.9127312709.

It can be divided in two parts, 20 and 4469, that added together give a square (4489 = 67²).

The spelling of 204469 in words is "two hundred four thousand, four hundred sixty-nine".