2004209 has 2 divisors, whose sum is σ = 2004210. Its totient is φ = 2004208.

The previous prime is 2004137. The next prime is 2004227. The reversal of 2004209 is 9024002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 327184 = 1295^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004209 - 2¹² = 2000113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2004269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002104 + 1002105.

It is an arithmetic number, because the mean of its divisors is an integer number (1002105).

2^2004209 is an apocalyptic number.

It is an amenable number.

2004209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004209 is an equidigital number, since it uses as much as digits as its factorization.

2004209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2004209 is about 1415.7008864870. The cubic root of 2004209 is about 126.0804265225.

The spelling of 2004209 in words is "two million, four thousand, two hundred nine".