89088889 has 2 divisors, whose sum is σ = 89088890. Its totient is φ = 89088888.

The previous prime is 89088887. The next prime is 89088893. The reversal of 89088889 is 98888098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47059600 + 42029289 = 6860^2 + 6483^2 .

It is a cyclic number.

It is not a de Polignac number, because 89088889 - 2¹ = 89088887 is a prime.

Together with 89088887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89088887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44544444 + 44544445.

It is an arithmetic number, because the mean of its divisors is an integer number (44544445).

Almost surely, 2^89088889 is an apocalyptic number.

It is an amenable number.

89088889 is a deficient number, since it is larger than the sum of its proper divisors (1).

89088889 is an equidigital number, since it uses as much as digits as its factorization.

89088889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2654208, while the sum is 58.

The square root of 89088889 is about 9438.6910639135. The cubic root of 89088889 is about 446.6230993248.

The spelling of 89088889 in words is "eighty-nine million, eighty-eight thousand, eight hundred eighty-nine".