8987289 has 4 divisors (see below), whose sum is σ = 11983056. Its totient is φ = 5991524.

The previous prime is 8987287. The next prime is 8987291. The reversal of 8987289 is 9827898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8987287) and next prime (8987291).

It is a cyclic number.

It is not a de Polignac number, because 8987289 - 2¹ = 8987287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8987287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497879 + ... + 1497884.

It is an arithmetic number, because the mean of its divisors is an integer number (2995764).

Almost surely, 2^8987289 is an apocalyptic number.

It is an amenable number.

8987289 is a deficient number, since it is larger than the sum of its proper divisors (2995767).

8987289 is a wasteful number, since it uses less digits than its factorization.

8987289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995766.

The product of its digits is 580608, while the sum is 51.

The square root of 8987289 is about 2997.8807514643. The cubic root of 8987289 is about 207.9104104437.

It can be divided in two parts, 89 and 87289, that added together give a palindrome (87378).

The spelling of 8987289 in words is "eight million, nine hundred eighty-seven thousand, two hundred eighty-nine".