89491211 has 4 divisors (see below), whose sum is σ = 90717192. Its totient is φ = 88265232.

The previous prime is 89491201. The next prime is 89491217. The reversal of 89491211 is 11219498.

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 89491211 - 2¹⁰ = 89490187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89491217) 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, 612881 + ... + 613026.

It is an arithmetic number, because the mean of its divisors is an integer number (22679298).

Almost surely, 2^89491211 is an apocalyptic number.

89491211 is a deficient number, since it is larger than the sum of its proper divisors (1225981).

89491211 is a wasteful number, since it uses less digits than its factorization.

89491211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225980.

The product of its digits is 5184, while the sum is 35.

The square root of 89491211 is about 9459.9794397240. The cubic root of 89491211 is about 447.2944007321.

The spelling of 89491211 in words is "eighty-nine million, four hundred ninety-one thousand, two hundred eleven".