840440044111 has 2 divisors, whose sum is σ = 840440044112. Its totient is φ = 840440044110.

The previous prime is 840440044021. The next prime is 840440044117. The reversal of 840440044111 is 111440044048.

840440044111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840440044111 - 2⁷ = 840440043983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840440044117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420220022055 + 420220022056.

It is an arithmetic number, because the mean of its divisors is an integer number (420220022056).

Almost surely, 2^840440044111 is an apocalyptic number.

840440044111 is a deficient number, since it is larger than the sum of its proper divisors (1).

840440044111 is an equidigital number, since it uses as much as digits as its factorization.

840440044111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 31.

Adding to 840440044111 its reverse (111440044048), we get a palindrome (951880088159).

The spelling of 840440044111 in words is "eight hundred forty billion, four hundred forty million, forty-four thousand, one hundred eleven".