4 - Wikipedia Approximately four weeks (4 times 7 days) to a lunar month (synodic month = 29 54 days) Thus the number four is universally an integral part of primitive sacred calendars
4 (number) - New World Encyclopedia Four is the second square number (a "square number" is an integer that can be written as the square of some other integer) and the second centered triangular number
8 Fun Facts About the Number 4 - Facts. net Explore fascinating facts about the number 4 Discover its significance in various cultures, including its symbolism and representations in numerology, astrology, and mythology