444024124021 has 4 divisors (see below), whose sum is σ = 444045602412. Its totient is φ = 444002645632.

The previous prime is 444024124007. The next prime is 444024124081. The reversal of 444024124021 is 120421420444.

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 359863212996 + 84160911025 = 599886^2 + 290105^2 .

It is a cyclic number.

It is not a de Polignac number, because 444024124021 - 2¹⁵ = 444024091253 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 (444024124001) 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, 10708156 + ... + 10749541.

It is an arithmetic number, because the mean of its divisors is an integer number (111011400603).

Almost surely, 2^444024124021 is an apocalyptic number.

It is an amenable number.

444024124021 is a deficient number, since it is larger than the sum of its proper divisors (21478391).

444024124021 is a wasteful number, since it uses less digits than its factorization.

444024124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21478390.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 444024124021 its reverse (120421420444), we get a palindrome (564445544465).

The spelling of 444024124021 in words is "four hundred forty-four billion, twenty-four million, one hundred twenty-four thousand, twenty-one".