89917280087 has 2 divisors, whose sum is σ = 89917280088. Its totient is φ = 89917280086.

The previous prime is 89917280071. The next prime is 89917280111. The reversal of 89917280087 is 78008271998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89917280087 - 2⁴ = 89917280071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89917280017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44958640043 + 44958640044.

It is an arithmetic number, because the mean of its divisors is an integer number (44958640044).

Almost surely, 2^89917280087 is an apocalyptic number.

89917280087 is a deficient number, since it is larger than the sum of its proper divisors (1).

89917280087 is an equidigital number, since it uses as much as digits as its factorization.

89917280087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 59.

The spelling of 89917280087 in words is "eighty-nine billion, nine hundred seventeen million, two hundred eighty thousand, eighty-seven".