8009609 has 2 divisors, whose sum is σ = 8009610. Its totient is φ = 8009608.

The previous prime is 8009593. The next prime is 8009611. The reversal of 8009609 is 9069008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5359225 + 2650384 = 2315^2 + 1628^2 .

It is a cyclic number.

It is not a de Polignac number, because 8009609 - 2⁴ = 8009593 is a prime.

Together with 8009611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8009629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004804 + 4004805.

It is an arithmetic number, because the mean of its divisors is an integer number (4004805).

Almost surely, 2^8009609 is an apocalyptic number.

It is an amenable number.

8009609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8009609 is an equidigital number, since it uses as much as digits as its factorization.

8009609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 8009609 is about 2830.1252622455. The cubic root of 8009609 is about 200.0800429613.

The spelling of 8009609 in words is "eight million, nine thousand, six hundred nine".