8987609 has 2 divisors, whose sum is σ = 8987610. Its totient is φ = 8987608.

The previous prime is 8987603. The next prime is 8987621. The reversal of 8987609 is 9067898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7997584 + 990025 = 2828^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 8987609 - 2⁸ = 8987353 is a prime.

It is not a weakly prime, because it can be changed into another prime (8987603) 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, 4493804 + 4493805.

It is an arithmetic number, because the mean of its divisors is an integer number (4493805).

Almost surely, 2^8987609 is an apocalyptic number.

It is an amenable number.

8987609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8987609 is an equidigital number, since it uses as much as digits as its factorization.

8987609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 8987609 is about 2997.9341220247. The cubic root of 8987609 is about 207.9128780229.

The spelling of 8987609 in words is "eight million, nine hundred eighty-seven thousand, six hundred nine".