RealValuedNumericQ

RealValuedNumericQ[expr] gives True if expr is a real-valued numeric quantity, and False otherwise.

Examples

Check real-valued numbers:

RealValuedNumericQ[3.14]
(* True *)

RealValuedNumericQ[2 + 3 I]
(* False *)

RealValuedNumericQ[Pi]
(* True *)

Please visit the official Wolfram Language Reference for more details.