89731529 has 2 divisors, whose sum is σ = 89731530. Its totient is φ = 89731528.

The previous prime is 89731513. The next prime is 89731561. The reversal of 89731529 is 92513798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62410000 + 27321529 = 7900^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 89731529 - 2⁴ = 89731513 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89731529.

It is not a weakly prime, because it can be changed into another prime (89734529) 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, 44865764 + 44865765.

It is an arithmetic number, because the mean of its divisors is an integer number (44865765).

Almost surely, 2^89731529 is an apocalyptic number.

It is an amenable number.

89731529 is a deficient number, since it is larger than the sum of its proper divisors (1).

89731529 is an equidigital number, since it uses as much as digits as its factorization.

89731529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 89731529 is about 9472.6727484908. The cubic root of 89731529 is about 447.6944281690.

The spelling of 89731529 in words is "eighty-nine million, seven hundred thirty-one thousand, five hundred twenty-nine".