869804 has 24 divisors (see below), whose sum is σ = 1681680. Its totient is φ = 391104.

The previous prime is 869779. The next prime is 869807. The reversal of 869804 is 408968.

869804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869804.

It is not an unprimeable number, because it can be changed into a prime (869807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 2430.

It is an arithmetic number, because the mean of its divisors is an integer number (70070).

2⁸⁶⁹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

869804 is a deficient number, since it is larger than the sum of its proper divisors (811876).

869804 is a wasteful number, since it uses less digits than its factorization.

869804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 869804 is about 932.6328323622. The cubic root of 869804 is about 95.4568576091.

The spelling of 869804 in words is "eight hundred sixty-nine thousand, eight hundred four".