44421 has 16 divisors (see below), whose sum is σ = 68544. Its totient is φ = 25344.

The previous prime is 44417. The next prime is 44449. The reversal of 44421 is 12444.

44421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 44421 - 2² = 44417 is a prime.

It is a Curzon number.

44421 is a lucky number.

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 44421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (4284).

2⁴⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

44421 is a deficient number, since it is larger than the sum of its proper divisors (24123).

44421 is a wasteful number, since it uses less digits than its factorization.

44421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100.

The product of its digits is 128, while the sum is 15.

The square root of 44421 is about 210.7628999611. The cubic root of 44421 is about 35.4157228507.

Adding to 44421 its reverse (12444), we get a palindrome (56865).

It can be divided in two parts, 444 and 21, that added together give a triangular number (465 = T₃₀).

The spelling of 44421 in words is "forty-four thousand, four hundred twenty-one", and thus it is an iban number.