44424021 has 4 divisors (see below), whose sum is σ = 59232032. Its totient is φ = 29616012.

The previous prime is 44424019. The next prime is 44424059. The reversal of 44424021 is 12042444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44424021 - 2¹ = 44424019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44424001) 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, 7404001 + ... + 7404006.

It is an arithmetic number, because the mean of its divisors is an integer number (14808008).

Almost surely, 2^44424021 is an apocalyptic number.

It is an amenable number.

44424021 is a deficient number, since it is larger than the sum of its proper divisors (14808011).

44424021 is a wasteful number, since it uses less digits than its factorization.

44424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14808010.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 44424021 is about 6665.1347323216. The cubic root of 44424021 is about 354.1652568771.

Adding to 44424021 its reverse (12042444), we get a palindrome (56466465).

It can be divided in two parts, 444240 and 21, that multiplied together give a triangular number (9329040 = T₄₃₁₉).

The spelling of 44424021 in words is "forty-four million, four hundred twenty-four thousand, twenty-one".