Because we know that math rules all the events (interactions) in universe and makes all the objects in it(living systems, molecules, atoms, etc).

So, by Webster dictionary god is mathematics.

Other definitions (from same dictionary): a powerfull ruler (math can fit here too); the incorporeal divine Principle ruling over all as eternal Spirit (here logic or math both nicely fit).

Biblical definition of God is that is looks and acts like a man, so biologically then God = homo sapiens specie.