40344455441 has 4 divisors (see below), whose sum is σ = 40384922292. Its totient is φ = 40303988592.

The previous prime is 40344455399. The next prime is 40344455447. The reversal of 40344455441 is 14455444304.

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 22674336400 + 17670119041 = 150580^2 + 132929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40344455441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40344455395 and 40344455404.

It is not an unprimeable number, because it can be changed into a prime (40344455447) 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, 20231930 + ... + 20233923.

It is an arithmetic number, because the mean of its divisors is an integer number (10096230573).

Almost surely, 2^40344455441 is an apocalyptic number.

It is an amenable number.

40344455441 is a deficient number, since it is larger than the sum of its proper divisors (40466851).

40344455441 is an equidigital number, since it uses as much as digits as its factorization.

40344455441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40466850.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 40344455441 its reverse (14455444304), we get a palindrome (54799899745).

The spelling of 40344455441 in words is "forty billion, three hundred forty-four million, four hundred fifty-five thousand, four hundred forty-one".