44005440001 has 4 divisors (see below), whose sum is σ = 44176667652. Its totient is φ = 43834212352.

The previous prime is 44005439983. The next prime is 44005440007. The reversal of 44005440001 is 10004450044.

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 34021433601 + 9984006400 = 184449^2 + 99920^2 .

It is a cyclic number.

It is not a de Polignac number, because 44005440001 - 2⁷ = 44005439873 is a prime.

It is a super-2 number, since 2×44005440001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44005440007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85613440 + ... + 85613953.

It is an arithmetic number, because the mean of its divisors is an integer number (11044166913).

Almost surely, 2^44005440001 is an apocalyptic number.

It is an amenable number.

44005440001 is a deficient number, since it is larger than the sum of its proper divisors (171227651).

44005440001 is a wasteful number, since it uses less digits than its factorization.

44005440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171227650.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 44005440001 its reverse (10004450044), we get a palindrome (54009890045).

The spelling of 44005440001 in words is "forty-four billion, five million, four hundred forty thousand, one".