40943543 has 4 divisors (see below), whose sum is σ = 41942208. Its totient is φ = 39944880.

The previous prime is 40943521. The next prime is 40943569. The reversal of 40943543 is 34534904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40943543 - 2⁶ = 40943479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40943143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499271 + ... + 499352.

It is an arithmetic number, because the mean of its divisors is an integer number (10485552).

Almost surely, 2^40943543 is an apocalyptic number.

40943543 is a deficient number, since it is larger than the sum of its proper divisors (998665).

40943543 is an equidigital number, since it uses as much as digits as its factorization.

40943543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998664.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 40943543 is about 6398.7141677059. The cubic root of 40943543 is about 344.6633781639.

The spelling of 40943543 in words is "forty million, nine hundred forty-three thousand, five hundred forty-three".