804439 has 4 divisors (see below), whose sum is σ = 809424. Its totient is φ = 799456.

The previous prime is 804409. The next prime is 804443. The reversal of 804439 is 934408.

804439 = T₂ + T₃ + ... + T₁₆₈.

804439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 804439 - 2⁹ = 803927 is a prime.

It is a Duffinian number.

804439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804409) 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, 2242 + ... + 2575.

It is an arithmetic number, because the mean of its divisors is an integer number (202356).

2⁸⁰⁴⁴³⁹ is an apocalyptic number.

804439 is a deficient number, since it is larger than the sum of its proper divisors (4985).

804439 is a wasteful number, since it uses less digits than its factorization.

804439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 804439 is about 896.9052346820. The cubic root of 804439 is about 93.0031601809.

The spelling of 804439 in words is "eight hundred four thousand, four hundred thirty-nine".