4404424421 has 2 divisors, whose sum is σ = 4404424422. Its totient is φ = 4404424420.

The previous prime is 4404424403. The next prime is 4404424429. The reversal of 4404424421 is 1244244044.

4404424421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3247404196 + 1157020225 = 56986^2 + 34015^2 .

It is a cyclic number.

It is not a de Polignac number, because 4404424421 - 2⁶ = 4404424357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4404424429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2202212210 + 2202212211.

It is an arithmetic number, because the mean of its divisors is an integer number (2202212211).

Almost surely, 2^4404424421 is an apocalyptic number.

It is an amenable number.

4404424421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4404424421 is an equidigital number, since it uses as much as digits as its factorization.

4404424421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16384, while the sum is 29.

The square root of 4404424421 is about 66365.8377555802. The cubic root of 4404424421 is about 1639.1916029992.

Adding to 4404424421 its reverse (1244244044), we get a palindrome (5648668465).

The spelling of 4404424421 in words is "four billion, four hundred four million, four hundred twenty-four thousand, four hundred twenty-one".