89841087487 has 2 divisors, whose sum is σ = 89841087488. Its totient is φ = 89841087486.

The previous prime is 89841087443. The next prime is 89841087521. The reversal of 89841087487 is 78478014898.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89841087487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89841087437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44920543743 + 44920543744.

It is an arithmetic number, because the mean of its divisors is an integer number (44920543744).

Almost surely, 2^89841087487 is an apocalyptic number.

89841087487 is a deficient number, since it is larger than the sum of its proper divisors (1).

89841087487 is an equidigital number, since it uses as much as digits as its factorization.

89841087487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28901376, while the sum is 64.

The spelling of 89841087487 in words is "eighty-nine billion, eight hundred forty-one million, eighty-seven thousand, four hundred eighty-seven".