808121289 has 16 divisors (see below), whose sum is σ = 1101312000. Its totient is φ = 526931856.

The previous prime is 808121269. The next prime is 808121291. The reversal of 808121289 is 982121808.

808121289 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 808121289 - 2⁹ = 808120777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (808121239) 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, 23752 + ... + 46694.

It is an arithmetic number, because the mean of its divisors is an integer number (68832000).

Almost surely, 2^808121289 is an apocalyptic number.

It is an amenable number.

808121289 is a deficient number, since it is larger than the sum of its proper divisors (293190711).

808121289 is a wasteful number, since it uses less digits than its factorization.

808121289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23204.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 808121289 is about 28427.4741931111. The cubic root of 808121289 is about 931.4485035216.

The spelling of 808121289 in words is "eight hundred eight million, one hundred twenty-one thousand, two hundred eighty-nine".