809700852 has 12 divisors (see below), whose sum is σ = 1889302016. Its totient is φ = 269900280.

The previous prime is 809700833. The next prime is 809700911. The reversal of 809700852 is 258007908.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 809700852.

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 3 ways as a sum of consecutive naturals, for example, 33737524 + ... + 33737547.

Almost surely, 2^809700852 is an apocalyptic number.

It is an amenable number.

809700852 is an abundant number, since it is smaller than the sum of its proper divisors (1079601164).

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

809700852 is a wasteful number, since it uses less digits than its factorization.

809700852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67475078 (or 67475076 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 809700852 is about 28455.2429615352. The cubic root of 809700852 is about 932.0549818055.

The spelling of 809700852 in words is "eight hundred nine million, seven hundred thousand, eight hundred fifty-two".