808996221 has 64 divisors (see below), whose sum is σ = 1394288640. Its totient is φ = 458161920.

The previous prime is 808996219. The next prime is 808996229. The reversal of 808996221 is 122699808.

808996221 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 808996221 - 2¹ = 808996219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808996229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 822496 + ... + 823478.

It is an arithmetic number, because the mean of its divisors is an integer number (21785760).

Almost surely, 2^808996221 is an apocalyptic number.

It is an amenable number.

808996221 is a deficient number, since it is larger than the sum of its proper divisors (585292419).

808996221 is a wasteful number, since it uses less digits than its factorization.

808996221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 808996221 is about 28442.8588752959. The cubic root of 808996221 is about 931.7845340078.

The spelling of 808996221 in words is "eight hundred eight million, nine hundred ninety-six thousand, two hundred twenty-one".