43959 has 4 divisors (see below), whose sum is σ = 58616. Its totient is φ = 29304.

The previous prime is 43951. The next prime is 43961. The reversal of 43959 is 95934.

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

It is not a de Polignac number, because 43959 - 2³ = 43951 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 43959.

It is not an unprimeable number, because it can be changed into a prime (43951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7324 + ... + 7329.

It is an arithmetic number, because the mean of its divisors is an integer number (14654).

2⁴³⁹⁵⁹ is an apocalyptic number.

43959 is a deficient number, since it is larger than the sum of its proper divisors (14657).

43959 is a wasteful number, since it uses less digits than its factorization.

43959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14656.

The product of its digits is 4860, while the sum is 30.

The square root of 43959 is about 209.6640169414. The cubic root of 43959 is about 35.2925144697.

The spelling of 43959 in words is "forty-three thousand, nine hundred fifty-nine".