9661489 has 2 divisors, whose sum is σ = 9661490. Its totient is φ = 9661488.

The previous prime is 9661459. The next prime is 9661507. The reversal of 9661489 is 9841669.

9661489 is digitally balanced in base 3, 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., 9199089 + 462400 = 3033^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 9661489 - 2⁷ = 9661361 is a prime.

It is not a weakly prime, because it can be changed into another prime (9661409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830744 + 4830745.

It is an arithmetic number, because the mean of its divisors is an integer number (4830745).

Almost surely, 2^9661489 is an apocalyptic number.

It is an amenable number.

9661489 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661489 is an equidigital number, since it uses as much as digits as its factorization.

9661489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 9661489 is about 3108.2935833026. The cubic root of 9661489 is about 212.9845110590.

The spelling of 9661489 in words is "nine million, six hundred sixty-one thousand, four hundred eighty-nine".