89353972817 has 2 divisors, whose sum is σ = 89353972818. Its totient is φ = 89353972816.

The previous prime is 89353972793. The next prime is 89353972823. The reversal of 89353972817 is 71827935398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65954457856 + 23399514961 = 256816^2 + 152969^2 .

It is a cyclic number.

It is not a de Polignac number, because 89353972817 - 2⁶ = 89353972753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89353972817.

It is not a weakly prime, because it can be changed into another prime (89353972117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44676986408 + 44676986409.

It is an arithmetic number, because the mean of its divisors is an integer number (44676986409).

Almost surely, 2^89353972817 is an apocalyptic number.

It is an amenable number.

89353972817 is a deficient number, since it is larger than the sum of its proper divisors (1).

89353972817 is an equidigital number, since it uses as much as digits as its factorization.

89353972817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 62.

The spelling of 89353972817 in words is "eighty-nine billion, three hundred fifty-three million, nine hundred seventy-two thousand, eight hundred seventeen".