443361 has 4 divisors (see below), whose sum is σ = 591152. Its totient is φ = 295572.

The previous prime is 443353. The next prime is 443363. The reversal of 443361 is 163344.

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 not a de Polignac number, because 443361 - 2³ = 443353 is a prime.

It is a D-number.

It is a Duffinian number.

443361 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 443361.

It is not an unprimeable number, because it can be changed into a prime (443363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73891 + ... + 73896.

It is an arithmetic number, because the mean of its divisors is an integer number (147788).

2⁴⁴³³⁶¹ is an apocalyptic number.

It is an amenable number.

443361 is a deficient number, since it is larger than the sum of its proper divisors (147791).

443361 is a wasteful number, since it uses less digits than its factorization.

443361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147790.

The product of its digits is 864, while the sum is 21.

The square root of 443361 is about 665.8535875100. The cubic root of 443361 is about 76.2522206645.

It can be divided in two parts, 4 and 43361, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 443361 in words is "four hundred forty-three thousand, three hundred sixty-one".