4421421544 has 32 divisors (see below), whose sum is σ = 8459367840. Its totient is φ = 2165716800.

The previous prime is 4421421463. The next prime is 4421421559. The reversal of 4421421544 is 4451241244.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285439 + ... + 300529.

It is an arithmetic number, because the mean of its divisors is an integer number (264355245).

Almost surely, 2^4421421544 is an apocalyptic number.

It is an amenable number.

4421421544 is a deficient number, since it is larger than the sum of its proper divisors (4037946296).

4421421544 is a wasteful number, since it uses less digits than its factorization.

4421421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15841 (or 15837 counting only the distinct ones).

The product of its digits is 20480, while the sum is 31.

The square root of 4421421544 is about 66493.7707157595. The cubic root of 4421421544 is about 1641.2974988820.

Adding to 4421421544 its reverse (4451241244), we get a palindrome (8872662788).

The spelling of 4421421544 in words is "four billion, four hundred twenty-one million, four hundred twenty-one thousand, five hundred forty-four".