204969 has 8 divisors (see below), whose sum is σ = 289440. Its totient is φ = 128576.

The previous prime is 204947. The next prime is 204973. The reversal of 204969 is 969402.

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

It is a cyclic number.

It is not a de Polignac number, because 204969 - 2¹¹ = 202921 is a prime.

It is a super-2 number, since 2×204969² = 84024581922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (36180).

2²⁰⁴⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

204969 is a deficient number, since it is larger than the sum of its proper divisors (84471).

204969 is a wasteful number, since it uses less digits than its factorization.

204969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 204969 is about 452.7350218395. The cubic root of 204969 is about 58.9607130966.

The spelling of 204969 in words is "two hundred four thousand, nine hundred sixty-nine".