4 (four; /ˈfɔər/) is a number, numeral, and glyph. It is the natural number following 3 and preceding 5. Four is the smallest composite number, its proper divisors being 1 and 2. Four is also a highly composite number. The next highly composite number is 6.
In my life:
Four is the number of guys that I have dated whose birthday is tomorrow.
Thank you Facebook for that little factoid.