40043444 has 24 divisors (see below), whose sum is σ = 82672128. Its totient is φ = 16607520.

The previous prime is 40043417. The next prime is 40043467. The reversal of 40043444 is 44434004.

It is a super-2 number, since 2×40043444² = 3206954814762272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22199 + ... + 23934.

It is an arithmetic number, because the mean of its divisors is an integer number (3444672).

Almost surely, 2^40043444 is an apocalyptic number.

It is an amenable number.

40043444 is an abundant number, since it is smaller than the sum of its proper divisors (42628684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40043444 is a wasteful number, since it uses less digits than its factorization.

40043444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46175 (or 46173 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 40043444 is about 6327.9889380434. The cubic root of 40043444 is about 342.1189581961.

Adding to 40043444 its reverse (44434004), we get a palindrome (84477448).

The spelling of 40043444 in words is "forty million, forty-three thousand, four hundred forty-four".