43943 has 2 divisors, whose sum is σ = 43944. Its totient is φ = 43942.

The previous prime is 43933. The next prime is 43951. The reversal of 43943 is 34934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43943 - 2¹² = 39847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43913) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21971 + 21972.

It is an arithmetic number, because the mean of its divisors is an integer number (21972).

2⁴³⁹⁴³ is an apocalyptic number.

43943 is a deficient number, since it is larger than the sum of its proper divisors (1).

43943 is an equidigital number, since it uses as much as digits as its factorization.

43943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 43943 is about 209.6258571837. The cubic root of 43943 is about 35.2882320796.

Subtracting from 43943 its reverse (34934), we obtain a palindrome (9009).

The spelling of 43943 in words is "forty-three thousand, nine hundred forty-three".