8994509 has 2 divisors, whose sum is σ = 8994510. Its totient is φ = 8994508.

The previous prime is 8994497. The next prime is 8994533. The reversal of 8994509 is 9054998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8868484 + 126025 = 2978^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 8994509 - 2¹² = 8990413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8994509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8994569) 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, 4497254 + 4497255.

It is an arithmetic number, because the mean of its divisors is an integer number (4497255).

Almost surely, 2^8994509 is an apocalyptic number.

It is an amenable number.

8994509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8994509 is an equidigital number, since it uses as much as digits as its factorization.

8994509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 8994509 is about 2999.0846937024. The cubic root of 8994509 is about 207.9660709574.

The spelling of 8994509 in words is "eight million, nine hundred ninety-four thousand, five hundred nine".