No. From Wikipedia: "The first few deficient numbers are: 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, ..." As you can see, the list includes both even and odd numbers. For example, all powers of two are deficient.
Yes, the factors of all odd numbers are odd numbers.
With exception of the number 2, all prime numbers are odd. However, not all odd numbers are prime.
All prime numbers are odd with the only exception of the prime number 2. However, not all odd numbers are prime.
All of the odd numbers.
Half of all square numbers are odd. They are the ones which are the square of an odd number.
With the exception of 2, all primes are odd numbers, therefore the answer is no.
There is an infinite amount of prime numbers all of which are odd numbers
No - all squares of even numbers are even - while all squares of odd numbers are odd.
No. 5 and 7 are odd numbers.
Look for a table of prime numbers. All the odd numbers that are NOT on this list are composite numbers.
Half of ALL numbers are odd. So half of those numbers are odd. Figure it out.
The given numbers are all odd. The sum of 5 odd numbers must be odd. 50 is not odd so there is no solution.