43936 has 12 divisors (see below), whose sum is σ = 86562. Its totient is φ = 21952.

The previous prime is 43933. The next prime is 43943. The reversal of 43936 is 63934.

It can be written as a sum of positive squares in only one way, i.e., 24336 + 19600 = 156^2 + 140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43936.

It is not an unprimeable number, because it can be changed into a prime (43933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655 + ... + 718.

2⁴³⁹³⁶ is an apocalyptic number.

It is an amenable number.

43936 is a deficient number, since it is larger than the sum of its proper divisors (42626).

43936 is a wasteful number, since it uses less digits than its factorization.

43936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1375 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 43936 is about 209.6091601052. The cubic root of 43936 is about 35.2863582071.

It can be divided in two parts, 43 and 936, that added together give a palindrome (979).

The spelling of 43936 in words is "forty-three thousand, nine hundred thirty-six".