89131294591 has 4 divisors (see below), whose sum is σ = 89949013000. Its totient is φ = 88313576184.

The previous prime is 89131294541. The next prime is 89131294613. The reversal of 89131294591 is 19549213198.

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 89131294591 - 2¹¹ = 89131292543 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 (89131294531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408859041 + ... + 408859258.

It is an arithmetic number, because the mean of its divisors is an integer number (22487253250).

Almost surely, 2^89131294591 is an apocalyptic number.

89131294591 is a deficient number, since it is larger than the sum of its proper divisors (817718409).

89131294591 is a wasteful number, since it uses less digits than its factorization.

89131294591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817718408.

The product of its digits is 699840, while the sum is 52.

The spelling of 89131294591 in words is "eighty-nine billion, one hundred thirty-one million, two hundred ninety-four thousand, five hundred ninety-one".