89232640787 has 2 divisors, whose sum is σ = 89232640788. Its totient is φ = 89232640786.

The previous prime is 89232640781. The next prime is 89232640817. The reversal of 89232640787 is 78704623298.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89232640787 - 2⁴ = 89232640771 is a prime.

It is not a weakly prime, because it can be changed into another prime (89232640781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44616320393 + 44616320394.

It is an arithmetic number, because the mean of its divisors is an integer number (44616320394).

Almost surely, 2^89232640787 is an apocalyptic number.

89232640787 is a deficient number, since it is larger than the sum of its proper divisors (1).

89232640787 is an equidigital number, since it uses as much as digits as its factorization.

89232640787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 89232640787 in words is "eighty-nine billion, two hundred thirty-two million, six hundred forty thousand, seven hundred eighty-seven".