89328289 has 2 divisors, whose sum is σ = 89328290. Its totient is φ = 89328288.

The previous prime is 89328287. The next prime is 89328347. The reversal of 89328289 is 98282398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87740689 + 1587600 = 9367^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 89328289 - 2¹ = 89328287 is a prime.

Together with 89328287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89328287) 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 as a sum of consecutive naturals, namely, 44664144 + 44664145.

It is an arithmetic number, because the mean of its divisors is an integer number (44664145).

Almost surely, 2^89328289 is an apocalyptic number.

It is an amenable number.

89328289 is a deficient number, since it is larger than the sum of its proper divisors (1).

89328289 is an equidigital number, since it uses as much as digits as its factorization.

89328289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 49.

The square root of 89328289 is about 9451.3643988580. The cubic root of 89328289 is about 447.0227972765.

Subtracting from 89328289 its product of digits (497664), we obtain a square (88830625 = 9425²).

The spelling of 89328289 in words is "eighty-nine million, three hundred twenty-eight thousand, two hundred eighty-nine".