89097091 has 4 divisors (see below), whose sum is σ = 89136952. Its totient is φ = 89057232.

The previous prime is 89097089. The next prime is 89097121. The reversal of 89097091 is 19079098.

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 89097091 - 2¹ = 89097089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89097191) 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, 16365 + ... + 21118.

It is an arithmetic number, because the mean of its divisors is an integer number (22284238).

Almost surely, 2^89097091 is an apocalyptic number.

89097091 is a deficient number, since it is larger than the sum of its proper divisors (39861).

89097091 is a wasteful number, since it uses less digits than its factorization.

89097091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39860.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 89097091 is about 9439.1255421252. The cubic root of 89097091 is about 446.6368050753.

The spelling of 89097091 in words is "eighty-nine million, ninety-seven thousand, ninety-one".