8622989 has 4 divisors (see below), whose sum is σ = 8636160. Its totient is φ = 8609820.

The previous prime is 8622983. The next prime is 8623003. The reversal of 8622989 is 9892268.

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 a cyclic number.

It is not a de Polignac number, because 8622989 - 2⁴ = 8622973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8622983) 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 in 3 ways as a sum of consecutive naturals, for example, 5549 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (2159040).

Almost surely, 2^8622989 is an apocalyptic number.

It is an amenable number.

8622989 is a deficient number, since it is larger than the sum of its proper divisors (13171).

8622989 is a wasteful number, since it uses less digits than its factorization.

8622989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13170.

The product of its digits is 124416, while the sum is 44.

The square root of 8622989 is about 2936.4926357817. The cubic root of 8622989 is about 205.0623566006.

The spelling of 8622989 in words is "eight million, six hundred twenty-two thousand, nine hundred eighty-nine".