809430 has 16 divisors (see below), whose sum is σ = 1942704. Its totient is φ = 215840.

The previous prime is 809423. The next prime is 809437. The reversal of 809430 is 34908.

It is an interprime number because it is at equal distance from previous prime (809423) and next prime (809437).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 809430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809437) by changing a digit.

809430 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 7 ways as a sum of consecutive naturals, for example, 13461 + ... + 13520.

It is an arithmetic number, because the mean of its divisors is an integer number (121419).

2⁸⁰⁹⁴³⁰ is an apocalyptic number.

809430 is an abundant number, since it is smaller than the sum of its proper divisors (1133274).

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

809430 is a wasteful number, since it uses less digits than its factorization.

809430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26991.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 809430 is about 899.6832776038. The cubic root of 809430 is about 93.1951043374.

The spelling of 809430 in words is "eight hundred nine thousand, four hundred thirty".