89545609 has 2 divisors, whose sum is σ = 89545610. Its totient is φ = 89545608.

The previous prime is 89545597. The next prime is 89545627. The reversal of 89545609 is 90654598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72505225 + 17040384 = 8515^2 + 4128^2 .

It is a cyclic number.

It is not a de Polignac number, because 89545609 - 2⁹ = 89545097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89545679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44772804 + 44772805.

It is an arithmetic number, because the mean of its divisors is an integer number (44772805).

Almost surely, 2^89545609 is an apocalyptic number.

It is an amenable number.

89545609 is a deficient number, since it is larger than the sum of its proper divisors (1).

89545609 is an equidigital number, since it uses as much as digits as its factorization.

89545609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 89545609 is about 9462.8541677445. The cubic root of 89545609 is about 447.3850129537.

The spelling of 89545609 in words is "eighty-nine million, five hundred forty-five thousand, six hundred nine".