2004406 has 8 divisors (see below), whose sum is σ = 3013200. Its totient is φ = 1000008.

The previous prime is 2004383. The next prime is 2004421. The reversal of 2004406 is 6044002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2004406.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 520 + ... + 2068.

It is an arithmetic number, because the mean of its divisors is an integer number (376650).

2^2004406 is an apocalyptic number.

2004406 is a deficient number, since it is larger than the sum of its proper divisors (1008794).

2004406 is a wasteful number, since it uses less digits than its factorization.

2004406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2004406 is about 1415.7704616215. The cubic root of 2004406 is about 126.0845573343.

Adding to 2004406 its reverse (6044002), we get a palindrome (8048408).

The spelling of 2004406 in words is "two million, four thousand, four hundred six".