There are none.
There is no such even number.
It is: 4
9990 is divisible by 9 and is even.
The only common factor of 9, 6 and 4 is 1.
5 and 4 because -5-4 = -9 and -4*-5 = 20
No because 2 and 4 go into 8 3 goes into 9
Just 1.
360 is one such number. It is not the smallest, though.
4*9 = 36 so 360 is a possible answer.
5 and 7 are prime numbers. and 3 goes into 9, so the only number that goes into 5, 7, and 9 is 1. They are what we call "relatively prime", even though 9 is not prime, because they have no common factors other than 1.
Any even number you square will give you a even square number =)
An even number whose digits add up to 9 or a multiple of 9.