809789340 has 48 divisors (see below), whose sum is σ = 2288230560. Its totient is φ = 213960960.

The previous prime is 809789333. The next prime is 809789353. The reversal of 809789340 is 43987908.

It is a self number, because there is not a number n which added to its sum of digits gives 809789340.

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 55371 + ... + 68450.

It is an arithmetic number, because the mean of its divisors is an integer number (47671470).

Almost surely, 2^809789340 is an apocalyptic number.

It is an amenable number.

809789340 is an abundant number, since it is smaller than the sum of its proper divisors (1478441220).

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

809789340 is a wasteful number, since it uses less digits than its factorization.

809789340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123942 (or 123940 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 809789340 is about 28456.7977819009. The cubic root of 809789340 is about 932.0889337178.

The spelling of 809789340 in words is "eight hundred nine million, seven hundred eighty-nine thousand, three hundred forty".