Enneatractic
A person with an obsession with the number nine. These people generally think that the number nine is following them, and they associate everything with this number. An enneatractic person will continually add everything to see if it turns up to be nine or a factor of nine (3, 18, etc.) Oh, and normally...the number nine does follow them...
Andrea is so enneatractic, she even tried counting the letters of her name, to see if they'd add up to nine.