1208209 has 2 divisors, whose sum is σ = 1208210. Its totient is φ = 1208208.

The previous prime is 1208189. The next prime is 1208219. The reversal of 1208209 is 9028021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 73984 = 1065^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208209 - 2⁵ = 1208177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1208209.

It is not a weakly prime, because it can be changed into another prime (1208219) 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, 604104 + 604105.

It is an arithmetic number, because the mean of its divisors is an integer number (604105).

2^1208209 is an apocalyptic number.

It is an amenable number.

1208209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208209 is an equidigital number, since it uses as much as digits as its factorization.

1208209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1208209 is about 1099.1856076205. The cubic root of 1208209 is about 106.5076221337.

The spelling of 1208209 in words is "one million, two hundred eight thousand, two hundred nine".