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764 LearnersLast updated on August 5, 2025

Place value is what we need to consider when we write numbers in words. The number, 400 in words, can be written as four hundred.

Place value is the value of each digit in a number like ones, tens, hundreds, thousands. When writing a number in words, we need to consider place value.
|
Hundreds |
Tens |
Ones |
|
4 |
0 |
0 |
This is how we split the number, 400 according to the place value. So, here we have two in hundreds places and zero in ones and tens of places. So, 400 in words is two hundred.
All the numbers have different mathematical properties. Now we can learn some properties of number 400.
|
Mathematical Property |
Answers |
|
Is 400 a composite number? |
Yes |
|
Is 400 a prime number? |
No |
|
Is 400 a perfect cube? |
No |
|
Is 400 a perfect square? |
Yes |
|
Cube root of 400 |
7.37 |
|
Square root of 400 |
20 |
|
Is 400 an even number? |
Yes |
|
Is 400 an odd number? |
No |
|
Factors of 400 |
1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400. |
|
Prime factors of 400 |
2, 5 (24 × 52) |
|
Multiples of 400 |
400, 800, 1200, 1600, 2000, 2400, 2800, 3200, 3600, 4000 |


Students while writing numbers in words tend to make some common errors. Here is a list of common errors made by students and the ways to avoid them.
Even numbers: Any numbers which are evenly divisible by 2 are even numbers.
Odd number: The numbers which are not divisible by 2 are odd numbers.
Prime numbers: The numbers which have only two factors, that is one and the number itself
Square root: The square root of a number is a number which when multiplied by the number gives the number
Factors: The factor of a number is any number which can divide the number evenly.

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.
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