4443344421 has 32 divisors (see below), whose sum is σ = 6270566400. Its totient is φ = 2794511040.

The previous prime is 4443344407. The next prime is 4443344429. The reversal of 4443344421 is 1244433444.

It is not a de Polignac number, because 4443344421 - 2⁶ = 4443344357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443344429) 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, 1173910 + ... + 1177688.

It is an arithmetic number, because the mean of its divisors is an integer number (195955200).

Almost surely, 2^4443344421 is an apocalyptic number.

It is an amenable number.

4443344421 is a deficient number, since it is larger than the sum of its proper divisors (1827221979).

4443344421 is a wasteful number, since it uses less digits than its factorization.

4443344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129.

The product of its digits is 73728, while the sum is 33.

The square root of 4443344421 is about 66658.4159802796. The cubic root of 4443344421 is about 1644.0057271395.

Adding to 4443344421 its reverse (1244433444), we get a palindrome (5687777865).

The spelling of 4443344421 in words is "four billion, four hundred forty-three million, three hundred forty-four thousand, four hundred twenty-one".