4021444 has 48 divisors (see below), whose sum is σ = 8580096. Its totient is φ = 1612800.

The previous prime is 4021439. The next prime is 4021447. The reversal of 4021444 is 4441204.

4021444 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

4021444 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35532 + ... + 35644.

It is an arithmetic number, because the mean of its divisors is an integer number (178752).

Almost surely, 2^4021444 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 4021444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4290048).

4021444 is an abundant number, since it is smaller than the sum of its proper divisors (4558652).

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

4021444 is a wasteful number, since it uses less digits than its factorization.

4021444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 4021444 is about 2005.3538341151. The cubic root of 4021444 is about 159.0232683535.

Adding to 4021444 its reverse (4441204), we get a palindrome (8462648).

It can be divided in two parts, 4021 and 444, that added together give a triangular number (4465 = T₉₄).

The spelling of 4021444 in words is "four million, twenty-one thousand, four hundred forty-four".