847404 has 18 divisors (see below), whose sum is σ = 2142140. Its totient is φ = 282456.

The previous prime is 847393. The next prime is 847423. The reversal of 847404 is 404748.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847404.

It is an unprimeable number.

847404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11734 + ... + 11805.

2⁸⁴⁷⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

847404 is an abundant number, since it is smaller than the sum of its proper divisors (1294736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

847404 is a wasteful number, since it uses less digits than its factorization.

847404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23549 (or 23544 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 847404 is about 920.5454904566. The cubic root of 847404 is about 94.6302897551.

The spelling of 847404 in words is "eight hundred forty-seven thousand, four hundred four".