43822 has 4 divisors (see below), whose sum is σ = 65736. Its totient is φ = 21910.

The previous prime is 43801. The next prime is 43853. The reversal of 43822 is 22834.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 43822.

It is a congruent number.

It is an unprimeable number.

43822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10954 + ... + 10957.

It is an arithmetic number, because the mean of its divisors is an integer number (16434).

2⁴³⁸²² is an apocalyptic number.

43822 is a deficient number, since it is larger than the sum of its proper divisors (21914).

43822 is a wasteful number, since it uses less digits than its factorization.

43822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21913.

The product of its digits is 384, while the sum is 19.

The square root of 43822 is about 209.3370487993. The cubic root of 43822 is about 35.2558127999.

The spelling of 43822 in words is "forty-three thousand, eight hundred twenty-two".