4778944 has 28 divisors (see below), whose sum is σ = 9601200. Its totient is φ = 2359808.

The previous prime is 4778933. The next prime is 4778953. The reversal of 4778944 is 4498774.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4778944.

It is a congruent 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, 5277 + ... + 6115.

It is an arithmetic number, because the mean of its divisors is an integer number (342900).

Almost surely, 2^4778944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4800600).

4778944 is an abundant number, since it is smaller than the sum of its proper divisors (4822256).

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

4778944 is an equidigital number, since it uses as much as digits as its factorization.

4778944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 930 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 4778944 is about 2186.0795959891. The cubic root of 4778944 is about 168.4395143139.

The spelling of 4778944 in words is "four million, seven hundred seventy-eight thousand, nine hundred forty-four".