869101889 has 2 divisors, whose sum is σ = 869101890. Its totient is φ = 869101888.

The previous prime is 869101879. The next prime is 869101907. The reversal of 869101889 is 988101968.

It is a happy number.

869101889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637057600 + 232044289 = 25240^2 + 15233^2 .

It is a cyclic number.

It is not a de Polignac number, because 869101889 - 2²⁴ = 852324673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (869101879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434550944 + 434550945.

It is an arithmetic number, because the mean of its divisors is an integer number (434550945).

Almost surely, 2^869101889 is an apocalyptic number.

It is an amenable number.

869101889 is a deficient number, since it is larger than the sum of its proper divisors (1).

869101889 is an equidigital number, since it uses as much as digits as its factorization.

869101889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 50.

The square root of 869101889 is about 29480.5340691108. The cubic root of 869101889 is about 954.3116624598.

The spelling of 869101889 in words is "eight hundred sixty-nine million, one hundred one thousand, eight hundred eighty-nine".