4406778 has 32 divisors (see below), whose sum is σ = 9926400. Its totient is φ = 1448928.

The previous prime is 4406749. The next prime is 4406797. The reversal of 4406778 is 8776044.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3750 + ... + 4782.

It is an arithmetic number, because the mean of its divisors is an integer number (310200).

Almost surely, 2^4406778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4406778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4963200).

4406778 is an abundant number, since it is smaller than the sum of its proper divisors (5519622).

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

4406778 is a wasteful number, since it uses less digits than its factorization.

4406778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 4406778 is about 2099.2327169707. The cubic root of 4406778 is about 163.9483527632.

It can be divided in two parts, 4406 and 778, that added together give a square (5184 = 72²).

The spelling of 4406778 in words is "four million, four hundred six thousand, seven hundred seventy-eight".