Can I use a Revive before this forum dissapeares? I believe it was "forgotten" because 77749 is so hard.
((Square root 4)+7)*(7/7) = 9
Now the rules don't allow the use of the square root... let's say that it's possible as a last resort. (It's techincally ^(1/2)...)
Edit: I took a look at the answers. WELL, there is an answer but seriously... 7 = (7 + (4 / (7 ^ 9))). Can't blame me for not coming up with that!
Here are the next numbers 46792.