804489 has 16 divisors (see below), whose sum is σ = 1269120. Its totient is φ = 443520.

The previous prime is 804473. The next prime is 804493. The reversal of 804489 is 984408.

It is not a de Polignac number, because 804489 - 2⁴ = 804473 is a prime.

It is a super-2 number, since 2×804489² = 1294405102242, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

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 15 ways as a sum of consecutive naturals, for example, 52 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (79320).

2⁸⁰⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

804489 is a deficient number, since it is larger than the sum of its proper divisors (464631).

804489 is a wasteful number, since it uses less digits than its factorization.

804489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 804489 is about 896.9331078737. The cubic root of 804489 is about 93.0050870151.

The spelling of 804489 in words is "eight hundred four thousand, four hundred eighty-nine".