4447890 has 48 divisors (see below), whose sum is σ = 11740248. Its totient is φ = 1168128.

The previous prime is 4447889. The next prime is 4447903. The reversal of 4447890 is 987444.

4447890 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4422609 + 25281 = 2103^2 + 159^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6232 + ... + 6908.

Almost surely, 2^4447890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4447890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5870124).

4447890 is an abundant number, since it is smaller than the sum of its proper divisors (7292358).

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

4447890 is a wasteful number, since it uses less digits than its factorization.

4447890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 4447890 is about 2109.0021337116. The cubic root of 4447890 is about 164.4566146676.

The spelling of 4447890 in words is "four million, four hundred forty-seven thousand, eight hundred ninety".