8440404041 has 4 divisors (see below), whose sum is σ = 8440598784. Its totient is φ = 8440209300.

The previous prime is 8440404013. The next prime is 8440404059. The reversal of 8440404041 is 1404040448.

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-8440404041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8440403995 and 8440404013.

It is not an unprimeable number, because it can be changed into a prime (8443404041) 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, 296 + ... + 129926.

It is an arithmetic number, because the mean of its divisors is an integer number (2110149696).

Almost surely, 2^8440404041 is an apocalyptic number.

It is an amenable number.

8440404041 is a deficient number, since it is larger than the sum of its proper divisors (194743).

8440404041 is a wasteful number, since it uses less digits than its factorization.

8440404041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194742.

The product of its (nonzero) digits is 8192, while the sum is 29.

The square root of 8440404041 is about 91871.6715914106. The cubic root of 8440404041 is about 2036.0467495084.

Adding to 8440404041 its reverse (1404040448), we get a palindrome (9844444489).

The spelling of 8440404041 in words is "eight billion, four hundred forty million, four hundred four thousand, forty-one".