number9The meaning of the number 9: How is 9 spell, written in words, interesting facts, mathematics, computer science, numerology, codes. 9 in Roman Numerals and images.Pronunciation of the number 9. 9 (nine) is the Arabic number which comes after 8 and before 10. It is an odd number, and is the hhest single-dit number. It is also a square number. In Roman