40440040444 has 24 divisors (see below), whose sum is σ = 73872650880. Its totient is φ = 19334178864.

The previous prime is 40440040441. The next prime is 40440040481. The reversal of 40440040444 is 44404004404.

It is a super-2 number, since 2×40440040444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440040441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195607 + ... + 345169.

It is an arithmetic number, because the mean of its divisors is an integer number (3078027120).

Almost surely, 2^40440040444 is an apocalyptic number.

It is an amenable number.

40440040444 is a deficient number, since it is larger than the sum of its proper divisors (33432610436).

40440040444 is a wasteful number, since it uses less digits than its factorization.

40440040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152529 (or 152527 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40440040444 its reverse (44404004404), we get a palindrome (84844044848).

The spelling of 40440040444 in words is "forty billion, four hundred forty million, forty thousand, four hundred forty-four".