44043021 has 24 divisors (see below), whose sum is σ = 71975904. Its totient is φ = 26691120.

The previous prime is 44043011. The next prime is 44043031. The reversal of 44043021 is 12034044.

It is an interprime number because it is at equal distance from previous prime (44043011) and next prime (44043031).

It is not a de Polignac number, because 44043021 - 2⁵ = 44042989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44042985 and 44043003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44043001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5566 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (2998996).

Almost surely, 2^44043021 is an apocalyptic number.

It is an amenable number.

44043021 is a deficient number, since it is larger than the sum of its proper divisors (27932883).

44043021 is a wasteful number, since it uses less digits than its factorization.

44043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16503 (or 16491 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 44043021 is about 6636.4916183176. The cubic root of 44043021 is about 353.1498559892.

Adding to 44043021 its reverse (12034044), we get a palindrome (56077065).

The spelling of 44043021 in words is "forty-four million, forty-three thousand, twenty-one".