40044440001 has 4 divisors (see below), whose sum is σ = 53392586672. Its totient is φ = 26696293332.

The previous prime is 40044439997. The next prime is 40044440027. The reversal of 40044440001 is 10004444004.

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 40044440001 - 2² = 40044439997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40044440001.

It is not an unprimeable number, because it can be changed into a prime (40044440041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6674073331 + ... + 6674073336.

It is an arithmetic number, because the mean of its divisors is an integer number (13348146668).

Almost surely, 2^40044440001 is an apocalyptic number.

It is an amenable number.

40044440001 is a deficient number, since it is larger than the sum of its proper divisors (13348146671).

40044440001 is a wasteful number, since it uses less digits than its factorization.

40044440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13348146670.

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

Adding to 40044440001 its reverse (10004444004), we get a palindrome (50048884005).

The spelling of 40044440001 in words is "forty billion, forty-four million, four hundred forty thousand, one".