809470 has 16 divisors (see below), whose sum is σ = 1482048. Its totient is φ = 318240.

The previous prime is 809461. The next prime is 809491. The reversal of 809470 is 74908.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

809470 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (92628).

2⁸⁰⁹⁴⁷⁰ is an apocalyptic number.

809470 is a deficient number, since it is larger than the sum of its proper divisors (672578).

809470 is a wasteful number, since it uses less digits than its factorization.

809470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 809470 is about 899.7055073745. The cubic root of 809470 is about 93.1966394682.

It can be divided in two parts, 8094 and 70, that multiplied together give a triangular number (566580 = T₁₀₆₄).

The spelling of 809470 in words is "eight hundred nine thousand, four hundred seventy".