4478

4478 is a natural number in the decimal numeral system. It lies between 4477 and 4479. It is even and composite, with prime factorization 2 × 2239. The factor 2239 is prime, so 4478 is twice a prime number. Therefore it is not a prime, and it is not a perfect power. The closest perfect squares are 66^2 = 4356 and 67^2 = 4489, so 4478 is not a square. It is not a cube or any higher power.

The sum of its digits is 23, giving a digital root of 5. In modular arithmetic, 4478 ≡ 2 (mod 3) and ≡ 5 (mod 9). It is 2 modulo 4 (divisible by 2 but not by 4) and 5 modulo 7.

In other contexts, 4478 may appear as an identifier such as a catalog number or model designation; its meaning depends on the issuing organization. As a numeric value, it is part of the sequence of integers and is sometimes considered in basic number theory or recreational mathematics for its factorization properties.