44443421 has 8 divisors (see below), whose sum is σ = 48885888. Its totient is φ = 40401900.

The previous prime is 44443411. The next prime is 44443433. The reversal of 44443421 is 12434444.

It is a happy number.

44443421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-44443421 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 (44443411) 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 7 ways as a sum of consecutive naturals, for example, 15365 + ... + 18026.

It is an arithmetic number, because the mean of its divisors is an integer number (6110736).

Almost surely, 2^44443421 is an apocalyptic number.

It is an amenable number.

44443421 is a deficient number, since it is larger than the sum of its proper divisors (4442467).

44443421 is an equidigital number, since it uses as much as digits as its factorization.

44443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33424 (or 33402 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 44443421 is about 6666.5899078914. The cubic root of 44443421 is about 354.2168041100.

Adding to 44443421 its reverse (12434444), we get a palindrome (56877865).

The spelling of 44443421 in words is "forty-four million, four hundred forty-three thousand, four hundred twenty-one".