44643421 has 8 divisors (see below), whose sum is σ = 45301760. Its totient is φ = 43990128.

The previous prime is 44643419. The next prime is 44643491. The reversal of 44643421 is 12434644.

44643421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 44643421 - 2¹ = 44643419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44643421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44643491) 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, 18820 + ... + 21058.

It is an arithmetic number, because the mean of its divisors is an integer number (5662720).

Almost surely, 2^44643421 is an apocalyptic number.

It is an amenable number.

44643421 is a deficient number, since it is larger than the sum of its proper divisors (658339).

44643421 is a wasteful number, since it uses less digits than its factorization.

44643421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523.

The product of its digits is 9216, while the sum is 28.

The square root of 44643421 is about 6681.5732428822. The cubic root of 44643421 is about 354.7473465136.

The spelling of 44643421 in words is "forty-four million, six hundred forty-three thousand, four hundred twenty-one".