852812109 has 12 divisors (see below), whose sum is σ = 1232144316. Its totient is φ = 568400832.

The previous prime is 852812099. The next prime is 852812111. The reversal of 852812109 is 901218258.

852812109 is a `hidden beast` number, since 8 + 528 + 121 + 0 + 9 = 666.

852812109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 466689609 + 386122500 = 21603^2 + 19650^2 .

It is not a de Polignac number, because 852812109 - 2¹¹ = 852810061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852812159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37657 + ... + 55889.

It is an arithmetic number, because the mean of its divisors is an integer number (102678693).

Almost surely, 2^852812109 is an apocalyptic number.

It is an amenable number.

852812109 is a deficient number, since it is larger than the sum of its proper divisors (379332207).

852812109 is a wasteful number, since it uses less digits than its factorization.

852812109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23436 (or 23433 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 852812109 is about 29202.9469232131. The cubic root of 852812109 is about 948.3117231830.

The spelling of 852812109 in words is "eight hundred fifty-two million, eight hundred twelve thousand, one hundred nine".