Square Root Calculator › Square root of 397
Square Root of 397
√397 ≈ 19.924859
397 is not a perfect square, so √397 is an irrational number that is approximately 19.924859. In simplified radical form, √397 = √397.
√397 lies between √361 = 19 and √400 = 20.
| Number | 397 |
| Square root (decimal) | 19.924859 |
| Simplified radical | √397 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 397 a perfect square?
No, 397 is not a perfect square, so its square root is irrational and approximately 19.924859.
What is the square root of 397 in simplest radical form?
√397 = √397 in simplest radical form.