89166389 has 4 divisors (see below), whose sum is σ = 96025356. Its totient is φ = 82307424.

The previous prime is 89166383. The next prime is 89166397. The reversal of 89166389 is 98366198.

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 16200625 + 72965764 = 4025^2 + 8542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89166389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89166383) 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 in 3 ways as a sum of consecutive naturals, for example, 3429464 + ... + 3429489.

It is an arithmetic number, because the mean of its divisors is an integer number (24006339).

Almost surely, 2^89166389 is an apocalyptic number.

It is an amenable number.

89166389 is a deficient number, since it is larger than the sum of its proper divisors (6858967).

89166389 is a wasteful number, since it uses less digits than its factorization.

89166389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858966.

The product of its digits is 559872, while the sum is 50.

The square root of 89166389 is about 9442.7956135882. The cubic root of 89166389 is about 446.7525702331.

The spelling of 89166389 in words is "eighty-nine million, one hundred sixty-six thousand, three hundred eighty-nine".