8868989 has 4 divisors (see below), whose sum is σ = 8990556. Its totient is φ = 8747424.

The previous prime is 8868971. The next prime is 8869009. The reversal of 8868989 is 9898688.

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 6543364 + 2325625 = 2558^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 8868989 - 2⁸ = 8868733 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 (8868919) 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, 60674 + ... + 60819.

It is an arithmetic number, because the mean of its divisors is an integer number (2247639).

Almost surely, 2^8868989 is an apocalyptic number.

It is an amenable number.

8868989 is a deficient number, since it is larger than the sum of its proper divisors (121567).

8868989 is a wasteful number, since it uses less digits than its factorization.

8868989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121566.

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

The square root of 8868989 is about 2978.0847872416. The cubic root of 8868989 is about 206.9941342749.

The spelling of 8868989 in words is "eight million, eight hundred sixty-eight thousand, nine hundred eighty-nine".