863843 has 2 divisors, whose sum is σ = 863844. Its totient is φ = 863842.

The previous prime is 863833. The next prime is 863851. The reversal of 863843 is 348368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863843 - 2¹⁰ = 862819 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (863803) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431921 + 431922.

It is an arithmetic number, because the mean of its divisors is an integer number (431922).

2⁸⁶³⁸⁴³ is an apocalyptic number.

863843 is a deficient number, since it is larger than the sum of its proper divisors (1).

863843 is an equidigital number, since it uses as much as digits as its factorization.

863843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 863843 is about 929.4315466994. The cubic root of 863843 is about 95.2382937416.

The spelling of 863843 in words is "eight hundred sixty-three thousand, eight hundred forty-three".