89125609 has 4 divisors (see below), whose sum is σ = 89154900. Its totient is φ = 89096320.

The previous prime is 89125607. The next prime is 89125633. The reversal of 89125609 is 90652198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8179600 + 80946009 = 2860^2 + 8997^2 .

It is a cyclic number.

It is not a de Polignac number, because 89125609 - 2¹ = 89125607 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89125607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9472 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (22288725).

Almost surely, 2^89125609 is an apocalyptic number.

It is an amenable number.

89125609 is a deficient number, since it is larger than the sum of its proper divisors (29291).

89125609 is a wasteful number, since it uses less digits than its factorization.

89125609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29290.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 89125609 is about 9440.6360484874. The cubic root of 89125609 is about 446.6844528325.

The spelling of 89125609 in words is "eighty-nine million, one hundred twenty-five thousand, six hundred nine".