4421444421 has 8 divisors (see below), whose sum is σ = 5941679104. Its totient is φ = 2924419680.

The previous prime is 4421444411. The next prime is 4421444431. The reversal of 4421444421 is 1244441244.

It is an interprime number because it is at equal distance from previous prime (4421444411) and next prime (4421444431).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4421444421 - 2⁹ = 4421443909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421444411) 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, 5802040 + ... + 5802801.

It is an arithmetic number, because the mean of its divisors is an integer number (742709888).

Almost surely, 2^4421444421 is an apocalyptic number.

It is an amenable number.

4421444421 is a deficient number, since it is larger than the sum of its proper divisors (1520234683).

4421444421 is a wasteful number, since it uses less digits than its factorization.

4421444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11604971.

The product of its digits is 16384, while the sum is 30.

The square root of 4421444421 is about 66493.9427391699. The cubic root of 4421444421 is about 1641.3003296381.

Adding to 4421444421 its reverse (1244441244), we get a palindrome (5665885665).

The spelling of 4421444421 in words is "four billion, four hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-one".