809434 has 16 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 387504.

The previous prime is 809423. The next prime is 809437. The reversal of 809434 is 434908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809437) 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 7 ways as a sum of consecutive naturals, for example, 7372 + ... + 7480.

It is an arithmetic number, because the mean of its divisors is an integer number (79200).

2⁸⁰⁹⁴³⁴ is an apocalyptic number.

809434 is a deficient number, since it is larger than the sum of its proper divisors (457766).

809434 is a wasteful number, since it uses less digits than its factorization.

809434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 809434 is about 899.6855006056. The cubic root of 809434 is about 93.1952578527.

It can be divided in two parts, 8094 and 34, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 809434 in words is "eight hundred nine thousand, four hundred thirty-four".