5444424221 has 4 divisors (see below), whose sum is σ = 5525684352. Its totient is φ = 5363164092.

The previous prime is 5444424173. The next prime is 5444424229. The reversal of 5444424221 is 1224244445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1224244445 = 5 ⋅244848889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5444424221 is a prime.

It is a super-2 number, since 2×5444424221² = 59283510196422913682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5444424229) 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, 40629965 + ... + 40630098.

It is an arithmetic number, because the mean of its divisors is an integer number (1381421088).

Almost surely, 2^5444424221 is an apocalyptic number.

It is an amenable number.

5444424221 is a deficient number, since it is larger than the sum of its proper divisors (81260131).

5444424221 is an equidigital number, since it uses as much as digits as its factorization.

5444424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81260130.

The product of its digits is 40960, while the sum is 32.

The square root of 5444424221 is about 73786.3416968208. The cubic root of 5444424221 is about 1759.2085177633.

Adding to 5444424221 its reverse (1224244445), we get a palindrome (6668668666).

The spelling of 5444424221 in words is "five billion, four hundred forty-four million, four hundred twenty-four thousand, two hundred twenty-one".