Fait général: 4445 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 4445 is the smallest number that can be written as the sum of 4 distinct positive cubes in 4 ways.
Culture générale: 4445 is a boring number.
Date historique: March 2nd is the day in 1992 that Armenia, Azerbaijan, Kazakhstan, Kyrgyzstan, Moldova, San Marino, Tajikistan, Turkmenistan and Uzbekistan join the United Nations.