40543443 has 32 divisors (see below), whose sum is σ = 63129600. Its totient is φ = 25682400.

The previous prime is 40543441. The next prime is 40543471. The reversal of 40543443 is 34434504.

40543443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40543443 - 2¹ = 40543441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (40543441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48973 + ... + 49793.

It is an arithmetic number, because the mean of its divisors is an integer number (1972800).

Almost surely, 2^40543443 is an apocalyptic number.

40543443 is a deficient number, since it is larger than the sum of its proper divisors (22586157).

40543443 is a wasteful number, since it uses less digits than its factorization.

40543443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 40543443 is about 6367.3733202946. The cubic root of 40543443 is about 343.5370185691.

Adding to 40543443 its reverse (34434504), we get a palindrome (74977947).

The spelling of 40543443 in words is "forty million, five hundred forty-three thousand, four hundred forty-three".