40043244 has 12 divisors (see below), whose sum is σ = 93434264. Its totient is φ = 13347744.

The previous prime is 40043239. The next prime is 40043251. The reversal of 40043244 is 44234004.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40043244² = 3206922780087072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40043244.

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 3 ways as a sum of consecutive naturals, for example, 1668457 + ... + 1668480.

Almost surely, 2^40043244 is an apocalyptic number.

It is an amenable number.

40043244 is an abundant number, since it is smaller than the sum of its proper divisors (53391020).

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

40043244 is a wasteful number, since it uses less digits than its factorization.

40043244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336944 (or 3336942 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40043244 is about 6327.9731352148. The cubic root of 40043244 is about 342.1183886155.

Adding to 40043244 its reverse (44234004), we get a palindrome (84277248).

The spelling of 40043244 in words is "forty million, forty-three thousand, two hundred forty-four".