89868814729 has 2 divisors, whose sum is σ = 89868814730. Its totient is φ = 89868814728.

The previous prime is 89868814703. The next prime is 89868814753. The reversal of 89868814729 is 92741886898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86556582025 + 3312232704 = 294205^2 + 57552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89868814729 is a prime.

It is not a weakly prime, because it can be changed into another prime (89868814129) 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, 44934407364 + 44934407365.

It is an arithmetic number, because the mean of its divisors is an integer number (44934407365).

Almost surely, 2^89868814729 is an apocalyptic number.

It is an amenable number.

89868814729 is a deficient number, since it is larger than the sum of its proper divisors (1).

89868814729 is an equidigital number, since it uses as much as digits as its factorization.

89868814729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111476736, while the sum is 70.

The spelling of 89868814729 in words is "eighty-nine billion, eight hundred sixty-eight million, eight hundred fourteen thousand, seven hundred twenty-nine".