8998889 has 2 divisors, whose sum is σ = 8998890. Its totient is φ = 8998888.

The previous prime is 8998883. The next prime is 8998901. The reversal of 8998889 is 9888998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 490000 = 2917^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8998889 is a prime.

It is not a weakly prime, because it can be changed into another prime (8998883) 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 as a sum of consecutive naturals, namely, 4499444 + 4499445.

It is an arithmetic number, because the mean of its divisors is an integer number (4499445).

Almost surely, 2^8998889 is an apocalyptic number.

It is an amenable number.

8998889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8998889 is an equidigital number, since it uses as much as digits as its factorization.

8998889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 59.

The square root of 8998889 is about 2999.8148276185. The cubic root of 8998889 is about 207.9998227932. Note that the first 3 decimals are identical.

The spelling of 8998889 in words is "eight million, nine hundred ninety-eight thousand, eight hundred eighty-nine".