40440111 has 4 divisors (see below), whose sum is σ = 53920152. Its totient is φ = 26960072.

The previous prime is 40440091. The next prime is 40440119. The reversal of 40440111 is 11104404.

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

It is a cyclic number.

It is not a de Polignac number, because 40440111 - 2⁵ = 40440079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440119) 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, 6740016 + ... + 6740021.

It is an arithmetic number, because the mean of its divisors is an integer number (13480038).

Almost surely, 2^40440111 is an apocalyptic number.

40440111 is a deficient number, since it is larger than the sum of its proper divisors (13480041).

40440111 is a wasteful number, since it uses less digits than its factorization.

40440111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480040.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 40440111 is about 6359.2539656787. The cubic root of 40440111 is about 343.2449157015.

Adding to 40440111 its reverse (11104404), we get a palindrome (51544515).

The spelling of 40440111 in words is "forty million, four hundred forty thousand, one hundred eleven".