Sum of Digits of 489
ANSWER : 21
The sum of the digits in the number 489 is: 4 + 8 + 9 = 21
How to Calculate the Digit Sum of 489?
To find the sum of digits of a number, simply break it into individual digits and add them. For 489:
4 + 8 + 9 = 21
The digits of 489 are: 4, 8, 9.
Their sum is: 21
Step-by-Step Digit Sum of 489
We split the number 489 into its individual digits: 4 + 8 + 9 = 21
Digit Positions in 489
| Position | Digit |
|---|---|
| 1 | 4 |
| 2 | 8 |
| 3 | 9 |
Length of 489
The number 489 has 3 digits.
Is 21 a Prime Number?
No, 21 is not a prime number.
Digit Sums in Other Bases
- Binary: 111101001 → 6
- Octal: 751 → 13
- Hexadecimal: 1E9 → 24