874809 has 12 divisors (see below), whose sum is σ = 1360996. Its totient is φ = 538272.

The previous prime is 874807. The next prime is 874813. The reversal of 874809 is 908478.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 356409 = 720^2 + 597^2 .

It is not a de Polignac number, because 874809 - 2¹ = 874807 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 874809.

It is not an unprimeable number, because it can be changed into a prime (874807) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3622 + ... + 3855.

2⁸⁷⁴⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

874809 is a deficient number, since it is larger than the sum of its proper divisors (486187).

874809 is a wasteful number, since it uses less digits than its factorization.

874809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496 (or 7493 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 874809 is about 935.3122473271. The cubic root of 874809 is about 95.6395992064.

The spelling of 874809 in words is "eight hundred seventy-four thousand, eight hundred nine".