44236021 has 4 divisors (see below), whose sum is σ = 44311212. Its totient is φ = 44160832.

The previous prime is 44236019. The next prime is 44236033. The reversal of 44236021 is 12063244.

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 35533521 + 8702500 = 5961^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 44236021 - 2¹ = 44236019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44235983 and 44236001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44236421) 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, 36706 + ... + 37891.

It is an arithmetic number, because the mean of its divisors is an integer number (11077803).

Almost surely, 2^44236021 is an apocalyptic number.

It is an amenable number.

44236021 is a deficient number, since it is larger than the sum of its proper divisors (75191).

44236021 is an equidigital number, since it uses as much as digits as its factorization.

44236021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75190.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 44236021 is about 6651.0165388458. The cubic root of 44236021 is about 353.6649478586.

Adding to 44236021 its reverse (12063244), we get a palindrome (56299265).

It can be divided in two parts, 442 and 36021, that added together give a palindrome (36463).

The spelling of 44236021 in words is "forty-four million, two hundred thirty-six thousand, twenty-one".