Superscript Nine (U+081F) is a Unicode other number from the Superscripts and Subscripts block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class EN (left-to-right (European number)), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ⁹ or ⁹.