8204441209 has 2 divisors, whose sum is σ = 8204441210. Its totient is φ = 8204441208.

The previous prime is 8204441177. The next prime is 8204441221. The reversal of 8204441209 is 9021444028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5598032400 + 2606408809 = 74820^2 + 51053^2 .

It is a cyclic number.

It is not a de Polignac number, because 8204441209 - 2⁵ = 8204441177 is a prime.

It is not a weakly prime, because it can be changed into another prime (8204441279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102220604 + 4102220605.

It is an arithmetic number, because the mean of its divisors is an integer number (4102220605).

Almost surely, 2^8204441209 is an apocalyptic number.

It is an amenable number.

8204441209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8204441209 is an equidigital number, since it uses as much as digits as its factorization.

8204441209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8204441209 is about 90578.3705362378. The cubic root of 8204441209 is about 2016.8936676315.

The spelling of 8204441209 in words is "eight billion, two hundred four million, four hundred forty-one thousand, two hundred nine".