998,721 in words
998,721
nine hundred and ninety-eight thousand seven hundred and twenty-one
998,721 is written nine hundred and ninety-eight thousand seven hundred and twenty-one.
Ways to write it
- As an ordinal
- nine hundred and ninety-eight thousand seven hundred and twenty-first
- Expanded form
- 900,000 + 90,000 + 8,000 + 700 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 9 | 900,000 |
| ten thousands | 9 | 90,000 |
| thousands | 8 | 8,000 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 110,969, 332,907 and 998,721 (6 factors)
- First 10 multiples
- 998,721, 1,997,442, 2,996,163, 3,994,884, 4,993,605, 5,992,326, 6,991,047, 7,989,768, 8,988,489, 9,987,210
- Square
- 998,721 × 998,721 = 997,443,635,841
- Square root
- ≈ 999.36
- Sum of the digits
- 9 + 9 + 8 + 7 + 2 + 1 = 36
- Rounded to the nearest 10
- 998,720
- Rounded to the nearest 100
- 998,700
- Rounded to the nearest 1000
- 999,000
- Number before
- 998,720
- Number after
- 998,722
- In binary
11110011110101000001
Quick check
What number comes just after 998,721?
Show the answer
998,722
Is 998,721 even or odd?
Show the answer
Odd
What is 998,721 + 10?
Show the answer
998,731
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 998,721 in words?
998,721 is written "nine hundred and ninety-eight thousand seven hundred and twenty-one".
Is 998,721 a prime number?
No. 998,721 is a composite number, because it has more than two factors.
What are the factors of 998,721?
The factors of 998,721 are 1, 3, 9, 110,969, 332,907 and 998,721.