4,001 in words
4,001
four thousand and one
4,001 is written four thousand and one.
Ways to write it
- As an ordinal
- four thousand and first
- Expanded form
- 4,000 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 4 | 4,000 |
| hundreds | 0 | 0 |
| tens | 0 | 0 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 4,001 (2 factors)
- First 10 multiples
- 4,001, 8,002, 12,003, 16,004, 20,005, 24,006, 28,007, 32,008, 36,009, 40,010
- Square
- 4,001 × 4,001 = 16,008,001
- Square root
- ≈ 63.25
- Sum of the digits
- 4 + 0 + 0 + 1 = 5
- Rounded to the nearest 10
- 4,000
- Rounded to the nearest 100
- 4,000
- Rounded to the nearest 1000
- 4,000
- Number before
- 4,000
- Number after
- 4,002
- In binary
111110100001
Quick check
What number comes just after 4,001?
Show the answer
4,002
Is 4,001 even or odd?
Show the answer
Odd
What is 4,001 + 10?
Show the answer
4,011
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 4,001 in words?
4,001 is written "four thousand and one".
Is 4,001 a prime number?
Yes. 4,001 is a prime number: its only factors are 1 and 4,001.
What are the factors of 4,001?
The factors of 4,001 are 1 and 4,001.