It is 399.
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There are several hundred of them. One example, the smallest, is 1039
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As the number is odd it must end in an odd digit; the odd digits are 1, 3, 5, 7, 9 and the smallest is 1 which is the sum of 1 and 0. Thus the smallest 7-digit number which meets your criteria is 1,001,001
The four smallest three digit composite numbers are: 100, 102, 104, 105 with sum 411.
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The answer to the smallest possible value of the sum of all the digits is 1. the number can either be 100 or 1000 - either way the sum is still one.
There are no 3-digit whole numbers whose digits sum to 3. The smallest 3-digit number is 100, and the largest is 999, but in neither case is the sum of the digits equal to 3.
18 1 + 8 = 9 and 9 x 2 = 18
I think it will be 17. The sum of digits is 8, which is the cube of 2.
It is another whole number.
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By the sum of its digits: 10. By each of its individual digits: 11.
The smallest two digit number is 00 (a number used as a wire gauge) and the biggest is 99, so the sum of the biggest and smallest 2-digits numbers is 99 (99 + 00).
If you have to use all four digits - 1349. If you can use them in a sum 9-4-3-1 = 1
There are several hundred of them. One example, the smallest, is 1039
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