853209863 has 8 divisors (see below), whose sum is σ = 971243136. Its totient is φ = 741921400.

The previous prime is 853209781. The next prime is 853209893. The reversal of 853209863 is 368902358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 853209863 - 2²⁰ = 852161287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853209893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685933 + ... + 1686438.

It is an arithmetic number, because the mean of its divisors is an integer number (121405392).

Almost surely, 2^853209863 is an apocalyptic number.

853209863 is a deficient number, since it is larger than the sum of its proper divisors (118033273).

853209863 is a wasteful number, since it uses less digits than its factorization.

853209863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372405.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 853209863 is about 29209.7562981960. The cubic root of 853209863 is about 948.4591320322.

Adding to 853209863 its reverse (368902358), we get a palindrome (1222112221).

The spelling of 853209863 in words is "eight hundred fifty-three million, two hundred nine thousand, eight hundred sixty-three".