809452 has 12 divisors (see below), whose sum is σ = 1618960. Its totient is φ = 346896.

The previous prime is 809447. The next prime is 809453. The reversal of 809452 is 254908.

It is a happy number.

809452 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 28909 = 809452 / (8 + 0 + 9 + 4 + 5 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 809452.

It is not an unprimeable number, because it can be changed into a prime (809453) 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 3 ways as a sum of consecutive naturals, for example, 14427 + ... + 14482.

2⁸⁰⁹⁴⁵² is an apocalyptic number.

It is an amenable number.

809452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

809452 is a wasteful number, since it uses less digits than its factorization.

809452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28920 (or 28918 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 809452 is about 899.6955040457. The cubic root of 809452 is about 93.1959486656.

The spelling of 809452 in words is "eight hundred nine thousand, four hundred fifty-two".