969163889 has 2 divisors, whose sum is σ = 969163890. Its totient is φ = 969163888.

The previous prime is 969163879. The next prime is 969163891. The reversal of 969163889 is 988361969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950673889 + 18490000 = 30833^2 + 4300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969163889 is a prime.

It is a Sophie Germain prime.

Together with 969163891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (969163849) 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, 484581944 + 484581945.

It is an arithmetic number, because the mean of its divisors is an integer number (484581945).

Almost surely, 2^969163889 is an apocalyptic number.

It is an amenable number.

969163889 is a deficient number, since it is larger than the sum of its proper divisors (1).

969163889 is an equidigital number, since it uses as much as digits as its factorization.

969163889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 969163889 is about 31131.3971578534. The cubic root of 969163889 is about 989.6137965762.

The spelling of 969163889 in words is "nine hundred sixty-nine million, one hundred sixty-three thousand, eight hundred eighty-nine".