40644111 has 4 divisors (see below), whose sum is σ = 54192152. Its totient is φ = 27096072.

The previous prime is 40644083. The next prime is 40644119. The reversal of 40644111 is 11144604.

40644111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40644111 - 2⁶ = 40644047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6774016 + ... + 6774021.

It is an arithmetic number, because the mean of its divisors is an integer number (13548038).

Almost surely, 2^40644111 is an apocalyptic number.

40644111 is a deficient number, since it is larger than the sum of its proper divisors (13548041).

40644111 is a wasteful number, since it uses less digits than its factorization.

40644111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13548040.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 40644111 is about 6375.2734059019. The cubic root of 40644111 is about 343.8211138382.

Adding to 40644111 its reverse (11144604), we get a palindrome (51788715).

It can be divided in two parts, 40644 and 111, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 40644111 in words is "forty million, six hundred forty-four thousand, one hundred eleven".