89236813 has 2 divisors, whose sum is σ = 89236814. Its totient is φ = 89236812.

The previous prime is 89236793. The next prime is 89236837. The reversal of 89236813 is 31863298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89170249 + 66564 = 9443^2 + 258^2 .

It is a cyclic number.

It is not a de Polignac number, because 89236813 - 2⁵ = 89236781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89236843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44618406 + 44618407.

It is an arithmetic number, because the mean of its divisors is an integer number (44618407).

Almost surely, 2^89236813 is an apocalyptic number.

It is an amenable number.

89236813 is a deficient number, since it is larger than the sum of its proper divisors (1).

89236813 is an equidigital number, since it uses as much as digits as its factorization.

89236813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 89236813 is about 9446.5238580125. The cubic root of 89236813 is about 446.8701549868.

The spelling of 89236813 in words is "eighty-nine million, two hundred thirty-six thousand, eight hundred thirteen".