4043221344 has 72 divisors (see below), whose sum is σ = 11524941792. Its totient is φ = 1344572160.

The previous prime is 4043221331. The next prime is 4043221363. The reversal of 4043221344 is 4431223404.

It is a happy number.

4043221344 is a `hidden beast` number, since 404 + 3 + 2 + 213 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107842 + ... + 140414.

It is an arithmetic number, because the mean of its divisors is an integer number (160068636).

Almost surely, 2^4043221344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4043221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5762470896).

4043221344 is an abundant number, since it is smaller than the sum of its proper divisors (7481720448).

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

4043221344 is a wasteful number, since it uses less digits than its factorization.

4043221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33020 (or 33009 counting only the distinct ones).

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

The square root of 4043221344 is about 63586.3298516277. The cubic root of 4043221344 is about 1593.0980488969.

Adding to 4043221344 its reverse (4431223404), we get a palindrome (8474444748).

It can be divided in two parts, 40432 and 21344, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 4043221344 in words is "four billion, forty-three million, two hundred twenty-one thousand, three hundred forty-four".