863443 has 16 divisors (see below), whose sum is σ = 1069056. Its totient is φ = 681120.

The previous prime is 863393. The next prime is 863479. The reversal of 863443 is 344368.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863443 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863143) 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 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (66816).

2⁸⁶³⁴⁴³ is an apocalyptic number.

863443 is a deficient number, since it is larger than the sum of its proper divisors (205613).

863443 is a wasteful number, since it uses less digits than its factorization.

863443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 6912, while the sum is 28.

The square root of 863443 is about 929.2163364901. The cubic root of 863443 is about 95.2235915334.

The spelling of 863443 in words is "eight hundred sixty-three thousand, four hundred forty-three".