Is 3969 is a composite number or not?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 3969 is composite or not first we have to find its factors.
Contents
Factors of 3969:
- If we have taken numbers from 1, 2, 3…for checking factors of 3969, we found that 3969 has factors 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969. Hence, we must say that 3969 is a composite number.
- Thus, 3969 is the composite number.
- If we multiply 3969 by 1, 2, 3 then we get the multiples of 3969 which are 3969, 7938 and so on.
3969 is a Composite number or Prime number
About the number 3969:
- 3969 has more than two factors which are 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969 and hence it is the composite number.
- 3969 is the odd composite number and it is the perfect square also.
- If we divide 3969 by 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969 then we get remainder as zero. Hence 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969 are the factors of 3969
Note:
- 3969 is the perfect square.
- Factors of 3969:1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969
- Prime factors of 3969: 3, 7
Conclusion:
- 3969 is the composite number which has factors 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969.
- And hence, 3969 is not the prime number.
Multiple Choice Questions:
1) 3969 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 3969 are
a) 1
b) 3, 7
c) 1, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969
d) 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969
Ans: d) 1, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969
3) 3969 is the odd composite number because
a) It has factors 1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323 and 3969
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
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