General fact: 26899 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 26899 is an unremarkable number.
Trivia: 26899 is an uninteresting number.
Historical date: August 23rd is the day in 1514 that Battle of Chaldiran ended with a decisive victory for the Sultan Selim I, Ottoman Empire, over the Shah Ismail I, Safavids founder.