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49 in words

49

forty-nine

49 is written forty-nine.

Ways to write it

As an ordinal: forty-ninth
Roman numeral: XLIX
Expanded form: 40 + 9

Place value

Place	Digit	Value
tens	4	40
ones	9	9

Number facts

Even or odd: Odd
Prime or composite: Composite
Factors: 1, 7 and 49 (3 factors)
First 10 multiples: 49, 98, 147, 196, 245, 294, 343, 392, 441, 490
Square: 49 × 49 = 2,401
Square root: 7
Sum of the digits: 4 + 9 = 13
Rounded to the nearest 10: 50
Number before: 48
Number after: 50
In binary: 110001

Quick check

What number comes just after 49?
Show the answer
50
Is 49 even or odd?
Show the answer
Odd
What is 49 + 10?
Show the answer
59

Practice with a game

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Place Value Quest

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Times Tables Challenge

Practice any times table from 2× to 12×.

Frequently asked questions

How do you write 49 in words?

49 is written "forty-nine".

Is 49 a prime number?

No. 49 is a composite number, because it has more than two factors.

What are the factors of 49?

The factors of 49 are 1, 7 and 49.

How do you write 49 in Roman numerals?

49 in Roman numerals is XLIX.