40044244001 has 4 divisors (see below), whose sum is σ = 41785298112. Its totient is φ = 38303189892.

The previous prime is 40044243917. The next prime is 40044244007. The reversal of 40044244001 is 10044244004.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40044244001 is a prime.

It is a super-2 number, since 2×40044244001² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1741054087 = 40044244001 / (4 + 0 + 0 + 4 + 4 + 2 + 4 + 4 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40044244007) 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, 870527021 + ... + 870527066.

It is an arithmetic number, because the mean of its divisors is an integer number (10446324528).

Almost surely, 2^40044244001 is an apocalyptic number.

It is an amenable number.

40044244001 is a deficient number, since it is larger than the sum of its proper divisors (1741054111).

40044244001 is a wasteful number, since it uses less digits than its factorization.

40044244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741054110.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 40044244001 its reverse (10044244004), we get a palindrome (50088488005).

The spelling of 40044244001 in words is "forty billion, forty-four million, two hundred forty-four thousand, one".