9986489 has 2 divisors, whose sum is σ = 9986490. Its totient is φ = 9986488.

The previous prime is 9986479. The next prime is 9986503. The reversal of 9986489 is 9846899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 3736489 = 2500^2 + 1933^2 .

It is a cyclic number.

It is not a de Polignac number, because 9986489 - 2⁸ = 9986233 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9986489.

It is not a weakly prime, because it can be changed into another prime (9986479) 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, 4993244 + 4993245.

It is an arithmetic number, because the mean of its divisors is an integer number (4993245).

Almost surely, 2^9986489 is an apocalyptic number.

It is an amenable number.

9986489 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986489 is an equidigital number, since it uses as much as digits as its factorization.

9986489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The square root of 9986489 is about 3160.1406614263. The cubic root of 9986489 is about 215.3463967149.

The spelling of 9986489 in words is "nine million, nine hundred eighty-six thousand, four hundred eighty-nine".