44442000021 has 4 divisors (see below), whose sum is σ = 59256000032. Its totient is φ = 29628000012.

The previous prime is 44442000013. The next prime is 44442000023. The reversal of 44442000021 is 12000024444.

44442000021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 44442000021 - 2³ = 44442000013 is a prime.

It is a super-3 number, since 3×44442000021³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44442000023) 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, 7407000001 + ... + 7407000006.

It is an arithmetic number, because the mean of its divisors is an integer number (14814000008).

Almost surely, 2^44442000021 is an apocalyptic number.

It is an amenable number.

44442000021 is a deficient number, since it is larger than the sum of its proper divisors (14814000011).

44442000021 is a wasteful number, since it uses less digits than its factorization.

44442000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14814000010.

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

Adding to 44442000021 its reverse (12000024444), we get a palindrome (56442024465).

The spelling of 44442000021 in words is "forty-four billion, four hundred forty-two million, twenty-one", and thus it is an aban number.