2004409 has 8 divisors (see below), whose sum is σ = 2233728. Its totient is φ = 1782960.

The previous prime is 2004383. The next prime is 2004421. The reversal of 2004409 is 9044002.

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 2004409 - 2⁵ = 2004377 is a prime.

It is an Ulam number.

It is a Duffinian number.

2004409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2004479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (279216).

2^2004409 is an apocalyptic number.

It is an amenable number.

2004409 is a deficient number, since it is larger than the sum of its proper divisors (229319).

2004409 is a wasteful number, since it uses less digits than its factorization.

2004409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2004409 is about 1415.7715211149. The cubic root of 2004409 is about 126.0846202379.

The spelling of 2004409 in words is "two million, four thousand, four hundred nine".