The enneagram is composed of nine basic types, wings, and instincts. For example, someone could be a 5 with a 4 wing and a self-preserving instinct. There are two possible wings for either type (one or the other, or both...or neither), three possible instincts, or no instinct or wing at all. Therefore, there are not 9 types or 81 in total, but 288 (9x2x4x4).
Enneaphobia is the irrational fear of the number nine. This is an unusual and rare irrational fear, commonly with unknown association. Many even recall preferring not to inhale at the sight of the number nine.
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 countingthe letters of her name, to see if they'd add up to nine.