9886889 has 4 divisors (see below), whose sum is σ = 9929556. Its totient is φ = 9844224.

The previous prime is 9886871. The next prime is 9886937.

9886889 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3736489 + 6150400 = 1933^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 9886889 - 2⁸ = 9886633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9886829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20984 + ... + 21449.

It is an arithmetic number, because the mean of its divisors is an integer number (2482389).

Almost surely, 2^9886889 is an apocalyptic number.

It is an amenable number.

9886889 is a deficient number, since it is larger than the sum of its proper divisors (42667).

9886889 is a wasteful number, since it uses less digits than its factorization.

9886889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42666.

The product of its digits is 1990656, while the sum is 56.

The square root of 9886889 is about 3144.3423795764. The cubic root of 9886889 is about 214.6280860650.

The spelling of 9886889 in words is "nine million, eight hundred eighty-six thousand, eight hundred eighty-nine".