Sum of the digits

To give an answer to today's challenge you need to know what 'sum of the digits means'.
I'll give explain by giving you an example:

the sum of the digits in 34 is 7 because 3+4 =7;
the sum of the digits in 1362 is 12 because 1+3+6+2 =12.

Got it? Good.
Now you can have a go at the challenge!

Post you answers in the comments. Answers tomorrow.

Thursday Update

Correct me if I am wrong (which I may well be) but I think there are four possible answers:

4983;

4389;

4587;

4785.

• They are all between 4,000 and 5,000
• All the digits are different
• The thousands digit has to be 4 which makes the tens digit 8
• The sum of all the digits is 24 
• All the numbers are odd.