4478978 has 8 divisors (see below), whose sum is σ = 7678272. Its totient is φ = 1919556.

The previous prime is 4478917. The next prime is 4478983. The reversal of 4478978 is 8798744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4478978² = 40122487848968, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159950 + ... + 159977.

It is an arithmetic number, because the mean of its divisors is an integer number (959784).

Almost surely, 2^4478978 is an apocalyptic number.

4478978 is a deficient number, since it is larger than the sum of its proper divisors (3199294).

4478978 is a wasteful number, since it uses less digits than its factorization.

4478978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319936.

The product of its digits is 451584, while the sum is 47.

The square root of 4478978 is about 2116.3596102742. The cubic root of 4478978 is about 164.8388754629.

The spelling of 4478978 in words is "four million, four hundred seventy-eight thousand, nine hundred seventy-eight".