Puzzlemania

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Across
  1. 4. 401 is the _____ of 400
  2. 7. A number for which the sum of all its factors is equal to twice the number is called a _______ number
  3. 9. numbers having more than two factors are called _____ numbers
  4. 10. one added to the greatest seven digit number is equal to _______
Down
  1. 1. writing of numbers from greatest to smallest is called an arrangement in ______ order
  2. 2. two numbers having only one as a common factor are called ______ numbers
  3. 3. One million is equal to _______
  4. 5. ____ is a factor of every number
  5. 6. the smallest whole number is _____
  6. 8. the prime numbers having difference 2 are called ______