44023821 has 16 divisors (see below), whose sum is σ = 60476544. Its totient is φ = 28465344.

The previous prime is 44023807. The next prime is 44023823. The reversal of 44023821 is 12832044.

It is not a de Polignac number, because 44023821 - 2¹¹ = 44021773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44023791 and 44023800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44023823) 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, 67720 + ... + 68366.

It is an arithmetic number, because the mean of its divisors is an integer number (3779784).

Almost surely, 2^44023821 is an apocalyptic number.

It is an amenable number.

44023821 is a deficient number, since it is larger than the sum of its proper divisors (16452723).

44023821 is a wasteful number, since it uses less digits than its factorization.

44023821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 44023821 is about 6635.0449131863. The cubic root of 44023821 is about 353.0985314538.

Adding to 44023821 its reverse (12832044), we get a palindrome (56855865).

It can be divided in two parts, 44023 and 821, that added together give a palindrome (44844).

The spelling of 44023821 in words is "forty-four million, twenty-three thousand, eight hundred twenty-one".