40043443 has 8 divisors (see below), whose sum is σ = 44135280. Its totient is φ = 36026880.

The previous prime is 40043417. The next prime is 40043467. The reversal of 40043443 is 34434004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40043443 - 2¹³ = 40035251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40073443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17698 + ... + 19831.

It is an arithmetic number, because the mean of its divisors is an integer number (5516910).

Almost surely, 2^40043443 is an apocalyptic number.

40043443 is a deficient number, since it is larger than the sum of its proper divisors (4091837).

40043443 is a wasteful number, since it uses less digits than its factorization.

40043443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37637.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40043443 is about 6327.9888590294. The cubic root of 40043443 is about 342.1189553482.

Adding to 40043443 its reverse (34434004), we get a palindrome (74477447).

It can be divided in two parts, 4004 and 3443, that added together give a palindrome (7447).

The spelling of 40043443 in words is "forty million, forty-three thousand, four hundred forty-three".