43968943 has 4 divisors (see below), whose sum is σ = 45387328. Its totient is φ = 42550560.

The previous prime is 43968931. The next prime is 43968961. The reversal of 43968943 is 34986934.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43968943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43968893 and 43968902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43968973) 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, 709146 + ... + 709207.

It is an arithmetic number, because the mean of its divisors is an integer number (11346832).

Almost surely, 2^43968943 is an apocalyptic number.

43968943 is a deficient number, since it is larger than the sum of its proper divisors (1418385).

43968943 is a wasteful number, since it uses less digits than its factorization.

43968943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418384.

The product of its digits is 559872, while the sum is 46.

The square root of 43968943 is about 6630.9081580127. The cubic root of 43968943 is about 352.9517518394.

Subtracting from 43968943 its reverse (34986934), we obtain a square (8982009 = 2997²).

The spelling of 43968943 in words is "forty-three million, nine hundred sixty-eight thousand, nine hundred forty-three".