The keycap 9 emoji represents the number 9 on a keypad.
Unicode: U+0039 U+FE0F U+20E3
The keycap 9 emoji is a digital representation of the number 9 as it appears on a computer keyboard or phone keypad. It is often used to convey numerical values or sequences, or to emphasize the number 9 in a playful or stylized way.
"I have 9️⃣ reasons why you should try this new restaurant!"
"The concert starts at 9️⃣ PM sharp, don't be late!"
"My favorite player wears jersey number 9️⃣."