9045209 has 2 divisors, whose sum is σ = 9045210. Its totient is φ = 9045208.

The previous prime is 9045199. The next prime is 9045217. The reversal of 9045209 is 9025409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 635209 = 2900^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 9045209 - 2⁴ = 9045193 is a prime.

It is not a weakly prime, because it can be changed into another prime (9045229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4522604 + 4522605.

It is an arithmetic number, because the mean of its divisors is an integer number (4522605).

Almost surely, 2^9045209 is an apocalyptic number.

It is an amenable number.

9045209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9045209 is an equidigital number, since it uses as much as digits as its factorization.

9045209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 9045209 is about 3007.5253947390. The cubic root of 9045209 is about 208.3560915227.

The spelling of 9045209 in words is "nine million, forty-five thousand, two hundred nine".