443861 has 4 divisors (see below), whose sum is σ = 484224. Its totient is φ = 403500.

The previous prime is 443851. The next prime is 443867. The reversal of 443861 is 168344.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 443861 - 2¹⁰ = 442837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 443861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443867) 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, 20165 + ... + 20186.

It is an arithmetic number, because the mean of its divisors is an integer number (121056).

2⁴⁴³⁸⁶¹ is an apocalyptic number.

It is an amenable number.

443861 is a deficient number, since it is larger than the sum of its proper divisors (40363).

443861 is a wasteful number, since it uses less digits than its factorization.

443861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40362.

The product of its digits is 2304, while the sum is 26.

The square root of 443861 is about 666.2289396296. The cubic root of 443861 is about 76.2808743554.

The spelling of 443861 in words is "four hundred forty-three thousand, eight hundred sixty-one".