802443 has 4 divisors (see below), whose sum is σ = 1069928. Its totient is φ = 534960.

The previous prime is 802441. The next prime is 802453. The reversal of 802443 is 344208.

It is a happy number.

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

It is not a de Polignac number, because 802443 - 2¹ = 802441 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 802443.

It is not an unprimeable number, because it can be changed into a prime (802441) 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 3 ways as a sum of consecutive naturals, for example, 133738 + ... + 133743.

It is an arithmetic number, because the mean of its divisors is an integer number (267482).

2⁸⁰²⁴⁴³ is an apocalyptic number.

802443 is a deficient number, since it is larger than the sum of its proper divisors (267485).

802443 is a wasteful number, since it uses less digits than its factorization.

802443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267484.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 802443 is about 895.7918284959. The cubic root of 802443 is about 92.9261756597.

The spelling of 802443 in words is "eight hundred two thousand, four hundred forty-three".