4478440 has 32 divisors (see below), whose sum is σ = 10183680. Its totient is φ = 1772352.

The previous prime is 4478423. The next prime is 4478527. The reversal of 4478440 is 448744.

4478440 = T₂₁₁ + T₂₁₂ + ... + T₃₃₀.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3577 + ... + 4663.

It is an arithmetic number, because the mean of its divisors is an integer number (318240).

Almost surely, 2^4478440 is an apocalyptic number.

4478440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4478440 is an abundant number, since it is smaller than the sum of its proper divisors (5705240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4478440 is a wasteful number, since it uses less digits than its factorization.

4478440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 4478440 is about 2116.2325014043. The cubic root of 4478440 is about 164.8322752320.

The spelling of 4478440 in words is "four million, four hundred seventy-eight thousand, four hundred forty".