4421543444 has 24 divisors (see below), whose sum is σ = 7887196800. Its totient is φ = 2168095904.

The previous prime is 4421543431. The next prime is 4421543449. The reversal of 4421543444 is 4443451244.

It is a super-2 number, since 2×4421543444² = 39100092854358762272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421543449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816257 + ... + 821655.

It is an arithmetic number, because the mean of its divisors is an integer number (328633200).

Almost surely, 2^4421543444 is an apocalyptic number.

It is an amenable number.

4421543444 is a deficient number, since it is larger than the sum of its proper divisors (3465653356).

4421543444 is a wasteful number, since it uses less digits than its factorization.

4421543444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9319 (or 9317 counting only the distinct ones).

The product of its digits is 122880, while the sum is 35.

The square root of 4421543444 is about 66494.6873366587. The cubic root of 4421543444 is about 1641.3125824416.

Adding to 4421543444 its reverse (4443451244), we get a palindrome (8864994688).

The spelling of 4421543444 in words is "four billion, four hundred twenty-one million, five hundred forty-three thousand, four hundred forty-four".