89091 has 12 divisors (see below), whose sum is σ = 135720. Its totient is φ = 56160.

The previous prime is 89087. The next prime is 89101. The reversal of 89091 is 19098.

It is not a de Polignac number, because 89091 - 2² = 89087 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (89021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90 + ... + 431.

It is an arithmetic number, because the mean of its divisors is an integer number (11310).

2⁸⁹⁰⁹¹ is an apocalyptic number.

89091 is a deficient number, since it is larger than the sum of its proper divisors (46629).

89091 is a wasteful number, since it uses less digits than its factorization.

89091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 89091 is about 298.4811551840. The cubic root of 89091 is about 44.6626626940.

The spelling of 89091 in words is "eighty-nine thousand, ninety-one".