89168091 has 4 divisors (see below), whose sum is σ = 118890792. Its totient is φ = 59445392.

The previous prime is 89168041. The next prime is 89168099. The reversal of 89168091 is 19086198.

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

It is a cyclic number.

It is not a de Polignac number, because 89168091 - 2⁷ = 89167963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89168099) 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 in 3 ways as a sum of consecutive naturals, for example, 14861346 + ... + 14861351.

It is an arithmetic number, because the mean of its divisors is an integer number (29722698).

Almost surely, 2^89168091 is an apocalyptic number.

89168091 is a deficient number, since it is larger than the sum of its proper divisors (29722701).

89168091 is a wasteful number, since it uses less digits than its factorization.

89168091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29722700.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 89168091 is about 9442.8857347741. The cubic root of 89168091 is about 446.7554127393.

The spelling of 89168091 in words is "eighty-nine million, one hundred sixty-eight thousand, ninety-one".