8815889 has 2 divisors, whose sum is σ = 8815890. Its totient is φ = 8815888.

The previous prime is 8815853. The next prime is 8815897. The reversal of 8815889 is 9885188.

8815889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 54289 = 2960^2 + 233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8815889 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8815819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4407944 + 4407945.

It is an arithmetic number, because the mean of its divisors is an integer number (4407945).

Almost surely, 2^8815889 is an apocalyptic number.

It is an amenable number.

8815889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8815889 is an equidigital number, since it uses as much as digits as its factorization.

8815889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 47.

The square root of 8815889 is about 2969.1562774633. The cubic root of 8815889 is about 206.5802051902.

The spelling of 8815889 in words is "eight million, eight hundred fifteen thousand, eight hundred eighty-nine".