8441009 has 2 divisors, whose sum is σ = 8441010. Its totient is φ = 8441008.

The previous prime is 8440979. The next prime is 8441011. The reversal of 8441009 is 9001448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8392609 + 48400 = 2897^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8441009 is a prime.

Together with 8441011, 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 (8441089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220504 + 4220505.

It is an arithmetic number, because the mean of its divisors is an integer number (4220505).

Almost surely, 2^8441009 is an apocalyptic number.

It is an amenable number.

8441009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8441009 is an equidigital number, since it uses as much as digits as its factorization.

8441009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8441009 is about 2905.3414601385. The cubic root of 8441009 is about 203.6095392337.

The spelling of 8441009 in words is "eight million, four hundred forty-one thousand, nine".