44441021 has 4 divisors (see below), whose sum is σ = 45973500. Its totient is φ = 42908544.

The previous prime is 44441017. The next prime is 44441027. The reversal of 44441021 is 12014444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12924025 + 31516996 = 3595^2 + 5614^2 .

It is a cyclic number.

It is not a de Polignac number, because 44441021 - 2² = 44441017 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 = 44440984 and 44441002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44441027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766196 + ... + 766253.

It is an arithmetic number, because the mean of its divisors is an integer number (11493375).

Almost surely, 2^44441021 is an apocalyptic number.

It is an amenable number.

44441021 is a deficient number, since it is larger than the sum of its proper divisors (1532479).

44441021 is a wasteful number, since it uses less digits than its factorization.

44441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532478.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 44441021 is about 6666.4099033888. The cubic root of 44441021 is about 354.2104279459.

Adding to 44441021 its reverse (12014444), we get a palindrome (56455465).

The spelling of 44441021 in words is "forty-four million, four hundred forty-one thousand, twenty-one".