204010409 has 8 divisors (see below), whose sum is σ = 212284800. Its totient is φ = 195900016.

The previous prime is 204010363. The next prime is 204010441. The reversal of 204010409 is 904010402.

204010409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 204010409 - 2²⁰ = 202961833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204010459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38459 + ... + 43440.

It is an arithmetic number, because the mean of its divisors is an integer number (26535600).

Almost surely, 2^204010409 is an apocalyptic number.

It is an amenable number.

204010409 is a deficient number, since it is larger than the sum of its proper divisors (8274391).

204010409 is an equidigital number, since it uses as much as digits as its factorization.

204010409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81999.

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

The square root of 204010409 is about 14283.2212403225. The cubic root of 204010409 is about 588.6865438285.

The spelling of 204010409 in words is "two hundred four million, ten thousand, four hundred nine".