The keycap digit four emoji represents a number 4 on a key of the keyboard. This symbol is generally used to build dates or count down numbers. It will also be used while typing numbers on the keyboard.
Keycap Digit Four Emoji
NOTE: Keycap Digit Four was accepted in 1999 as part of Unicode 3.0 and labeled Emoji 3.0 in 2016.
4️⃣ Keycap Digit Four
:four: (Github, Slack)