808521213 has 16 divisors (see below), whose sum is σ = 1102452480. Its totient is φ = 526833216.

The previous prime is 808521179. The next prime is 808521223. The reversal of 808521213 is 312125808.

808521213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 808521213 - 2⁶ = 808521149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808521223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113431 + ... + 120347.

It is an arithmetic number, because the mean of its divisors is an integer number (68903280).

Almost surely, 2^808521213 is an apocalyptic number.

It is an amenable number.

808521213 is a deficient number, since it is larger than the sum of its proper divisors (293931267).

808521213 is a wasteful number, since it uses less digits than its factorization.

808521213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 808521213 is about 28434.5074337503. The cubic root of 808521213 is about 931.6021302870.

The spelling of 808521213 in words is "eight hundred eight million, five hundred twenty-one thousand, two hundred thirteen".