4442321 has 8 divisors (see below), whose sum is σ = 5065704. Its totient is φ = 3859200.

The previous prime is 4442311. The next prime is 4442327. The reversal of 4442321 is 1232444.

It can be written as a sum of positive squares in 4 ways, for example, as 297025 + 4145296 = 545^2 + 2036^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4442293 and 4442302.

It is not an unprimeable number, because it can be changed into a prime (4442327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9830 + ... + 10271.

It is an arithmetic number, because the mean of its divisors is an integer number (633213).

Almost surely, 2^4442321 is an apocalyptic number.

It is an amenable number.

4442321 is a deficient number, since it is larger than the sum of its proper divisors (623383).

4442321 is a wasteful number, since it uses less digits than its factorization.

4442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20131.

The product of its digits is 768, while the sum is 20.

The square root of 4442321 is about 2107.6814275407. The cubic root of 4442321 is about 164.3879497959.

Adding to 4442321 its reverse (1232444), we get a palindrome (5674765).

It can be divided in two parts, 44423 and 21, that added together give a palindrome (44444).

The spelling of 4442321 in words is "four million, four hundred forty-two thousand, three hundred twenty-one".