The number 440 can refer to several things depending on the context: 1. **Mathematics**: It is an integer that comes after 439 and before 441. It is an even number and can be factored into its prime components as \( 2^3 \times 5 \times 11 \). 2. **Music**: In music, 440 Hz refers to the standard pitch for tuning musical instruments, known as "A440" or "concert pitch.
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