8771489 has 2 divisors, whose sum is σ = 8771490. Its totient is φ = 8771488.

The previous prime is 8771459. The next prime is 8771491. The reversal of 8771489 is 9841778.

8771489 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., 7102225 + 1669264 = 2665^2 + 1292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8771489 is a prime.

Together with 8771491, 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 (8771429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4385744 + 4385745.

It is an arithmetic number, because the mean of its divisors is an integer number (4385745).

Almost surely, 2^8771489 is an apocalyptic number.

It is an amenable number.

8771489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8771489 is an equidigital number, since it uses as much as digits as its factorization.

8771489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 44.

The square root of 8771489 is about 2961.6699681092. The cubic root of 8771489 is about 206.2328171789.

The spelling of 8771489 in words is "eight million, seven hundred seventy-one thousand, four hundred eighty-nine".