4451221344 has 24 divisors (see below), whose sum is σ = 11684456280. Its totient is φ = 1483740416.

The previous prime is 4451221343. The next prime is 4451221351. The reversal of 4451221344 is 4431221544.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451221343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23183349 + ... + 23183540.

It is an arithmetic number, because the mean of its divisors is an integer number (486852345).

Almost surely, 2^4451221344 is an apocalyptic number.

It is an amenable number.

4451221344 is an abundant number, since it is smaller than the sum of its proper divisors (7233234936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4451221344 is a wasteful number, since it uses less digits than its factorization.

4451221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46366902 (or 46366894 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 4451221344 is about 66717.4740529046. The cubic root of 4451221344 is about 1644.9766220813.

Adding to 4451221344 its reverse (4431221544), we get a palindrome (8882442888).

It can be divided in two parts, 44512 and 21344, that added together give a palindrome (65856).

The spelling of 4451221344 in words is "four billion, four hundred fifty-one million, two hundred twenty-one thousand, three hundred forty-four".