40440004404001 has 4 divisors (see below), whose sum is σ = 40441577787072. Its totient is φ = 40438431020932.

The previous prime is 40440004403993. The next prime is 40440004404029. The reversal of 40440004404001 is 10040440004404.

It is a happy number.

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 not a de Polignac number, because 40440004404001 - 2³ = 40440004403993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40440004404061) 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, 786652981 + ... + 786704386.

It is an arithmetic number, because the mean of its divisors is an integer number (10110394446768).

Almost surely, 2^{40440004404001} is an apocalyptic number.

It is an amenable number.

40440004404001 is a deficient number, since it is larger than the sum of its proper divisors (1573383071).

40440004404001 is a wasteful number, since it uses less digits than its factorization.

40440004404001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573383070.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 40440004404001 its reverse (10040440004404), we get a palindrome (50480444408405).

The spelling of 40440004404001 in words is "forty trillion, four hundred forty billion, four million, four hundred four thousand, one".