8959889 has 4 divisors (see below), whose sum is σ = 8967024. Its totient is φ = 8952756.

The previous prime is 8959879. The next prime is 8959891. The reversal of 8959889 is 9889598.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8959889 - 2²⁰ = 7911313 is a prime.

It is a super-2 number, since 2×8959889² = 160559221784642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8959829) 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, 1127 + ... + 4380.

It is an arithmetic number, because the mean of its divisors is an integer number (2241756).

Almost surely, 2^8959889 is an apocalyptic number.

It is an amenable number.

8959889 is a deficient number, since it is larger than the sum of its proper divisors (7135).

8959889 is a wasteful number, since it uses less digits than its factorization.

8959889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134.

The product of its digits is 1866240, while the sum is 56.

The square root of 8959889 is about 2993.3073681131. The cubic root of 8959889 is about 207.6989063817.

The spelling of 8959889 in words is "eight million, nine hundred fifty-nine thousand, eight hundred eighty-nine".