819441 has 12 divisors (see below), whose sum is σ = 1352832. Its totient is φ = 468216.

The previous prime is 819437. The next prime is 819443. The reversal of 819441 is 144918.

It is not a de Polignac number, because 819441 - 2² = 819437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (819443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6441 + ... + 6566.

It is an arithmetic number, because the mean of its divisors is an integer number (112736).

2⁸¹⁹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

819441 is a deficient number, since it is larger than the sum of its proper divisors (533391).

819441 is a wasteful number, since it uses less digits than its factorization.

819441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13020 (or 13017 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 819441 is about 905.2298050771. The cubic root of 819441 is about 93.5777423517.

The spelling of 819441 in words is "eight hundred nineteen thousand, four hundred forty-one".