43867 has 2 divisors, whose sum is σ = 43868. Its totient is φ = 43866.

The previous prime is 43853. The next prime is 43889. The reversal of 43867 is 76834.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43867 is a prime.

It is not a weakly prime, because it can be changed into another prime (43067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21933 + 21934.

It is an arithmetic number, because the mean of its divisors is an integer number (21934).

2⁴³⁸⁶⁷ is an apocalyptic number.

43867 is a deficient number, since it is larger than the sum of its proper divisors (1).

43867 is an equidigital number, since it uses as much as digits as its factorization.

43867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 43867 is about 209.4445033893. Note that the first 3 decimals coincide. The cubic root of 43867 is about 35.2678765186.

It can be divided in two parts, 438 and 67, that added together give a palindrome (505).

The spelling of 43867 in words is "forty-three thousand, eight hundred sixty-seven".