8287442209 has 2 divisors, whose sum is σ = 8287442210. Its totient is φ = 8287442208.

The previous prime is 8287442203. The next prime is 8287442231. The reversal of 8287442209 is 9022447828.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8124318225 + 163123984 = 90135^2 + 12772^2 .

It is a cyclic number.

It is not a de Polignac number, because 8287442209 - 2²⁷ = 8153224481 is a prime.

It is not a weakly prime, because it can be changed into another prime (8287442203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4143721104 + 4143721105.

It is an arithmetic number, because the mean of its divisors is an integer number (4143721105).

Almost surely, 2^8287442209 is an apocalyptic number.

It is an amenable number.

8287442209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8287442209 is an equidigital number, since it uses as much as digits as its factorization.

8287442209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 8287442209 is about 91035.3898711924. The cubic root of 8287442209 is about 2023.6722248597.

The spelling of 8287442209 in words is "eight billion, two hundred eighty-seven million, four hundred forty-two thousand, two hundred nine".