9644009 has 2 divisors, whose sum is σ = 9644010. Its totient is φ = 9644008.

The previous prime is 9644003. The next prime is 9644021. The reversal of 9644009 is 9004469.

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., 9486400 + 157609 = 3080^2 + 397^2 .

It is an emirp because it is prime and its reverse (9004469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9644009 - 2¹² = 9639913 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9644003) 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, 4822004 + 4822005.

It is an arithmetic number, because the mean of its divisors is an integer number (4822005).

Almost surely, 2^9644009 is an apocalyptic number.

It is an amenable number.

9644009 is a deficient number, since it is larger than the sum of its proper divisors (1).

9644009 is an equidigital number, since it uses as much as digits as its factorization.

9644009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 9644009 is about 3105.4804781225. The cubic root of 9644009 is about 212.8559864679.

The spelling of 9644009 in words is "nine million, six hundred forty-four thousand, nine".