44320421 has 8 divisors (see below), whose sum is σ = 45936384. Its totient is φ = 42716160.

The previous prime is 44320403. The next prime is 44320427. The reversal of 44320421 is 12402344.

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

It is a cyclic number.

It is not a de Polignac number, because 44320421 - 2⁶ = 44320357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 44320393 and 44320402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44320427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5186 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (5742048).

Almost surely, 2^44320421 is an apocalyptic number.

It is an amenable number.

44320421 is a deficient number, since it is larger than the sum of its proper divisors (1615963).

44320421 is a wasteful number, since it uses less digits than its factorization.

44320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44320421 is about 6657.3584100603. The cubic root of 44320421 is about 353.8897296645.

Adding to 44320421 its reverse (12402344), we get a palindrome (56722765).

The spelling of 44320421 in words is "forty-four million, three hundred twenty thousand, four hundred twenty-one".