852819909 has 16 divisors (see below), whose sum is σ = 1205108352. Its totient is φ = 534601728.

The previous prime is 852819899. The next prime is 852819911. The reversal of 852819909 is 909918258.

It is not a de Polignac number, because 852819909 - 2⁴ = 852819893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852819949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51552 + ... + 66054.

It is an arithmetic number, because the mean of its divisors is an integer number (75319272).

Almost surely, 2^852819909 is an apocalyptic number.

It is an amenable number.

852819909 is a deficient number, since it is larger than the sum of its proper divisors (352288443).

852819909 is a wasteful number, since it uses less digits than its factorization.

852819909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676.

The product of its (nonzero) digits is 466560, while the sum is 51.

The square root of 852819909 is about 29203.0804710736. The cubic root of 852819909 is about 948.3146143274.

The spelling of 852819909 in words is "eight hundred fifty-two million, eight hundred nineteen thousand, nine hundred nine".