89544689 has 4 divisors (see below), whose sum is σ = 96432756. Its totient is φ = 82656624.

The previous prime is 89544673. The next prime is 89544691. The reversal of 89544689 is 98644598.

It is a happy number.

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 50694400 + 38850289 = 7120^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 89544689 - 2⁴ = 89544673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89544689.

It is not an unprimeable number, because it can be changed into a prime (89544659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3444014 + ... + 3444039.

It is an arithmetic number, because the mean of its divisors is an integer number (24108189).

Almost surely, 2^89544689 is an apocalyptic number.

It is an amenable number.

89544689 is a deficient number, since it is larger than the sum of its proper divisors (6888067).

89544689 is a wasteful number, since it uses less digits than its factorization.

89544689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888066.

The product of its digits is 2488320, while the sum is 53.

The square root of 89544689 is about 9462.8055564933. The cubic root of 89544689 is about 447.3834807899.

Subtracting 89544689 from its reverse (98644598), we obtain a palindrome (9099909).

The spelling of 89544689 in words is "eighty-nine million, five hundred forty-four thousand, six hundred eighty-nine".