As a product of its prime factors: 3*3*7*7 = 441
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3*3*7*7 = 441
21
It is 441 or in words it is four hundred forty one.
441 has many more factors than 2. 441 is 21 squared, and it is also 49 times 9. 3 and 7 are factors as well.
1 * 441 equals 441