889965161 has 2 divisors, whose sum is σ = 889965162. Its totient is φ = 889965160.

The previous prime is 889965133. The next prime is 889965179. The reversal of 889965161 is 161569988.

889965161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780867136 + 109098025 = 27944^2 + 10445^2 .

It is a cyclic number.

It is not a de Polignac number, because 889965161 - 2¹⁰ = 889964137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (889965101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444982580 + 444982581.

It is an arithmetic number, because the mean of its divisors is an integer number (444982581).

Almost surely, 2^889965161 is an apocalyptic number.

It is an amenable number.

889965161 is a deficient number, since it is larger than the sum of its proper divisors (1).

889965161 is an equidigital number, since it uses as much as digits as its factorization.

889965161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 53.

The square root of 889965161 is about 29832.2838716716. The cubic root of 889965161 is about 961.8876202679.

The spelling of 889965161 in words is "eight hundred eighty-nine million, nine hundred sixty-five thousand, one hundred sixty-one".