1004209 has 2 divisors, whose sum is σ = 1004210. Its totient is φ = 1004208.

The previous prime is 1004167. The next prime is 1004221. The reversal of 1004209 is 9024001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 485809 = 720^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004209 - 2¹⁵ = 971441 is a prime.

1004209 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1004192 and 1004201.

It is not a weakly prime, because it can be changed into another prime (1004279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502104 + 502105.

It is an arithmetic number, because the mean of its divisors is an integer number (502105).

2^1004209 is an apocalyptic number.

It is an amenable number.

1004209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004209 is an equidigital number, since it uses as much as digits as its factorization.

1004209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1004209 is about 1002.1022901880. The cubic root of 1004209 is about 100.1401036181.

The spelling of 1004209 in words is "one million, four thousand, two hundred nine".