4442432321 has 2 divisors, whose sum is σ = 4442432322. Its totient is φ = 4442432320.

The previous prime is 4442432311. The next prime is 4442432363. The reversal of 4442432321 is 1232342444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3031603600 + 1410828721 = 55060^2 + 37561^2 .

It is a cyclic number.

It is not a de Polignac number, because 4442432321 - 2⁶ = 4442432257 is a prime.

It is a super-3 number, since 3×4442432321³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4442432311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221216160 + 2221216161.

It is an arithmetic number, because the mean of its divisors is an integer number (2221216161).

Almost surely, 2^4442432321 is an apocalyptic number.

It is an amenable number.

4442432321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442432321 is an equidigital number, since it uses as much as digits as its factorization.

4442432321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 29.

The square root of 4442432321 is about 66651.5740324263. The cubic root of 4442432321 is about 1643.8932292778.

Adding to 4442432321 its reverse (1232342444), we get a palindrome (5674774765).

The spelling of 4442432321 in words is "four billion, four hundred forty-two million, four hundred thirty-two thousand, three hundred twenty-one".