4478 has 4 divisors (see below), whose sum is σ = 6720. Its totient is φ = 2238.

The previous prime is 4463. The next prime is 4481. The reversal of 4478 is 8744.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 10, base 14 and base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (1680).

4478 is a deficient number, since it is larger than the sum of its proper divisors (2242).

4478 is a wasteful number, since it uses less digits than its factorization.

4478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241.

The product of its digits is 896, while the sum is 23.

The square root of 4478 is about 66.9178600973. The cubic root of 4478 is about 16.4826876881.

The spelling of 4478 in words is "four thousand, four hundred seventy-eight".