Is 397 a perfect square?

No, 397 is not a perfect square. Its square root is irrational.

What is 19.9248588452 squared?

19.9248588452 squared is approximately 397. (19.9248588452)² ≈ 397

√397 = 19.9248588452. 397 is not a perfect square; the result is irrational.

Instant answer with step-by-step solution

√397 = 19.9248588452

√397 = 19.9248588452

⚠ 397 is not a perfect square — result rounded to 10 significant figures

We need to find √397 — a number that when multiplied by itself equals 397.
397 is not a perfect square. Its square root is irrational.
It falls between √361 = 19 and √400 = 20.
Using the formula √N = N^(1/2): √397 = 397^0.5 = 19.9248588452
Verification: 19.9248588452 × 19.9248588452 ≈ 397 ✓ (rounded to 10 significant figures)

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