4439820 has 144 divisors (see below), whose sum is σ = 16015104. Its totient is φ = 892800.

The previous prime is 4439807. The next prime is 4439821. The reversal of 4439820 is 289344.

It is a happy number.

4439820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4439821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143205 + ... + 143235.

It is an arithmetic number, because the mean of its divisors is an integer number (111216).

Almost surely, 2^4439820 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 4439820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8007552).

4439820 is an abundant number, since it is smaller than the sum of its proper divisors (11575284).

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

4439820 is a wasteful number, since it uses less digits than its factorization.

4439820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 4439820 is about 2107.0880380278. The cubic root of 4439820 is about 164.3570941957.

The spelling of 4439820 in words is "four million, four hundred thirty-nine thousand, eight hundred twenty".