43823 has 4 divisors (see below), whose sum is σ = 47208. Its totient is φ = 40440.

The previous prime is 43801. The next prime is 43853. The reversal of 43823 is 32834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32834 = 2 ⋅16417.

It is a cyclic number.

It is not a de Polignac number, because 43823 - 2⁶ = 43759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43795 and 43804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (11802).

2⁴³⁸²³ is an apocalyptic number.

43823 is a deficient number, since it is larger than the sum of its proper divisors (3385).

43823 is a wasteful number, since it uses less digits than its factorization.

43823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its digits is 576, while the sum is 20.

The square root of 43823 is about 209.3394372783. The cubic root of 43823 is about 35.2560809723.

The spelling of 43823 in words is "forty-three thousand, eight hundred twenty-three".