Beyonce's favorite number is 4.
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43 Mind Blowing Facts You Didn't Know About Beyoncé

25. Beyonce's favorite number is 4.
42 - Her mum was born on January 4th. She was married on April 4th. Her birthday is September 4th and her husband's is December 4th. Bey's fourth studio album is titled '4.' Beyonce.com