2004404209 has 2 divisors, whose sum is σ = 2004404210. Its totient is φ = 2004404208.

The previous prime is 2004404203. The next prime is 2004404291. The reversal of 2004404209 is 9024044002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1088010225 + 916393984 = 32985^2 + 30272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004404209 - 2³ = 2004404201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2004404201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002202104 + 1002202105.

It is an arithmetic number, because the mean of its divisors is an integer number (1002202105).

Almost surely, 2^2004404209 is an apocalyptic number.

It is an amenable number.

2004404209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004404209 is an equidigital number, since it uses as much as digits as its factorization.

2004404209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2004404209 is about 44770.5730251468. The cubic root of 2004404209 is about 1260.8451978076.

The spelling of 2004404209 in words is "two billion, four million, four hundred four thousand, two hundred nine".