889443869 has 2 divisors, whose sum is σ = 889443870. Its totient is φ = 889443868.

The previous prime is 889443823. The next prime is 889443881. The reversal of 889443869 is 968344988.

889443869 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., 885776644 + 3667225 = 29762^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 889443869 - 2⁸ = 889443613 is a prime.

It is a super-2 number, since 2×889443869² = 1582220792203378322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889443809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444721934 + 444721935.

It is an arithmetic number, because the mean of its divisors is an integer number (444721935).

Almost surely, 2^889443869 is an apocalyptic number.

It is an amenable number.

889443869 is a deficient number, since it is larger than the sum of its proper divisors (1).

889443869 is an equidigital number, since it uses as much as digits as its factorization.

889443869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 59.

The square root of 889443869 is about 29823.5455471009. The cubic root of 889443869 is about 961.6997768641.

The spelling of 889443869 in words is "eight hundred eighty-nine million, four hundred forty-three thousand, eight hundred sixty-nine".