4442430321 has 24 divisors (see below), whose sum is σ = 7351081920. Its totient is φ = 2532458016.

The previous prime is 4442430313. The next prime is 4442430323. The reversal of 4442430321 is 1230342444.

It is a happy number.

It is not a de Polignac number, because 4442430321 - 2³ = 4442430313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4442430323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57750 + ... + 110543.

It is an arithmetic number, because the mean of its divisors is an integer number (306295080).

Almost surely, 2^4442430321 is an apocalyptic number.

It is an amenable number.

4442430321 is a deficient number, since it is larger than the sum of its proper divisors (2908651599).

4442430321 is a wasteful number, since it uses less digits than its factorization.

4442430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168725 (or 168722 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 4442430321 is about 66651.5590290280. The cubic root of 4442430321 is about 1643.8929825821.

Adding to 4442430321 its reverse (1230342444), we get a palindrome (5672772765).

The spelling of 4442430321 in words is "four billion, four hundred forty-two million, four hundred thirty thousand, three hundred twenty-one".