Fatto matematico: 9888 is the number of connected graphs with 8 vertices whose complements are also connected.
Trivia: 9888 is an uninteresting number.
Data storica: January 26th is the day in 1905 that the world's largest diamond ever, the Cullinan weighing 3,106.75 carats (0.62135 kg), is found at the Premier Mine near Pretoria in South Africa.