885085889 has 2 divisors, whose sum is σ = 885085890. Its totient is φ = 885085888.

The previous prime is 885085871. The next prime is 885085891. The reversal of 885085889 is 988580588.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610090000 + 274995889 = 24700^2 + 16583^2 .

It is a cyclic number.

It is not a de Polignac number, because 885085889 - 2²⁰ = 884037313 is a prime.

Together with 885085891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (881085889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442542944 + 442542945.

It is an arithmetic number, because the mean of its divisors is an integer number (442542945).

Almost surely, 2^885085889 is an apocalyptic number.

It is an amenable number.

885085889 is a deficient number, since it is larger than the sum of its proper divisors (1).

885085889 is an equidigital number, since it uses as much as digits as its factorization.

885085889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7372800, while the sum is 59.

The square root of 885085889 is about 29750.3930898400. The cubic root of 885085889 is about 960.1265346088.

The spelling of 885085889 in words is "eight hundred eighty-five million, eighty-five thousand, eight hundred eighty-nine".