I've had a look at the GKnova webpage, and it could either be a '0', '6', '8' or a '9'. So I looked them up on google maps, and 3 out of 4 are locations in Saudi Arabia.
47896 being South West of a place called Tabuk and 47993 being north east of Tabuk.
47696 is north east of of 47993.
Maybe just maybe it's and indication of something in Saudi Arabia.
see the image:
I've tried 47O96 [letter o not number] and it indicates that it may be incomplete. it may be HAlSi47O96 which is the formula for a high-silica mordenite.
At any rate, either location, or part of a chemical formula, it's a hint of something about the game.