• ← ExactNumberQ
• → IntegerQ

InexactNumberQ

WMA link

InexactNumberQ[expr]

returns True if expr is not an exact real or complex number
number, and False otherwise.

• • InexactNumberQ[a]

• • InexactNumberQ[3.0]

• • InexactNumberQ[2/3]

InexactNumberQ is True for complex numbers:

• • InexactNumberQ[4.0+I]