4443521423 has 32 divisors (see below), whose sum is σ = 5038848000. Its totient is φ = 3883813120.

The previous prime is 4443521399. The next prime is 4443521437. The reversal of 4443521423 is 3241253444.

It is not a de Polignac number, because 4443521423 - 2⁸ = 4443521167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4443521423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443521473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12377318 + ... + 12377676.

It is an arithmetic number, because the mean of its divisors is an integer number (157464000).

Almost surely, 2^4443521423 is an apocalyptic number.

4443521423 is a deficient number, since it is larger than the sum of its proper divisors (595326577).

4443521423 is a wasteful number, since it uses less digits than its factorization.

4443521423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its digits is 46080, while the sum is 32.

The square root of 4443521423 is about 66659.7436463718. The cubic root of 4443521423 is about 1644.0275566753.

Adding to 4443521423 its reverse (3241253444), we get a palindrome (7684774867).

The spelling of 4443521423 in words is "four billion, four hundred forty-three million, five hundred twenty-one thousand, four hundred twenty-three".