89084570891 has 2 divisors, whose sum is σ = 89084570892. Its totient is φ = 89084570890.

The previous prime is 89084570867. The next prime is 89084570921. The reversal of 89084570891 is 19807548098.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89084570891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89084570891.

It is not a weakly prime, because it can be changed into another prime (89084570801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44542285445 + 44542285446.

It is an arithmetic number, because the mean of its divisors is an integer number (44542285446).

Almost surely, 2^89084570891 is an apocalyptic number.

89084570891 is a deficient number, since it is larger than the sum of its proper divisors (1).

89084570891 is an equidigital number, since it uses as much as digits as its factorization.

89084570891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 89084570891 in words is "eighty-nine billion, eighty-four million, five hundred seventy thousand, eight hundred ninety-one".