89428189 has 2 divisors, whose sum is σ = 89428190. Its totient is φ = 89428188.

The previous prime is 89428181. The next prime is 89428201. The reversal of 89428189 is 98182498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61496964 + 27931225 = 7842^2 + 5285^2 .

It is a cyclic number.

It is not a de Polignac number, because 89428189 - 2³ = 89428181 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 (89428181) 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, 44714094 + 44714095.

It is an arithmetic number, because the mean of its divisors is an integer number (44714095).

Almost surely, 2^89428189 is an apocalyptic number.

It is an amenable number.

89428189 is a deficient number, since it is larger than the sum of its proper divisors (1).

89428189 is an equidigital number, since it uses as much as digits as its factorization.

89428189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 49.

The square root of 89428189 is about 9456.6478733217. The cubic root of 89428189 is about 447.1893773552.

The spelling of 89428189 in words is "eighty-nine million, four hundred twenty-eight thousand, one hundred eighty-nine".