Fatto matematico: 6479 is a value of n for which n and 8n together use each digit 1-9 exactly once.
Trivia: 6479 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 26th is the day in 2002 that the overcrowded Senegalese ferry MV Joola capsizes off the coast of The Gambia killing more than 1,000.