89515717 has 2 divisors, whose sum is σ = 89515718. Its totient is φ = 89515716.

The previous prime is 89515709. The next prime is 89515729. The reversal of 89515717 is 71751598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80748196 + 8767521 = 8986^2 + 2961^2 .

It is a cyclic number.

It is not a de Polignac number, because 89515717 - 2³ = 89515709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89515757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44757858 + 44757859.

It is an arithmetic number, because the mean of its divisors is an integer number (44757859).

Almost surely, 2^89515717 is an apocalyptic number.

It is an amenable number.

89515717 is a deficient number, since it is larger than the sum of its proper divisors (1).

89515717 is an equidigital number, since it uses as much as digits as its factorization.

89515717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 43.

The square root of 89515717 is about 9461.2745970086. The cubic root of 89515717 is about 447.3352255835.

The spelling of 89515717 in words is "eighty-nine million, five hundred fifteen thousand, seven hundred seventeen".