89643529 has 2 divisors, whose sum is σ = 89643530. Its totient is φ = 89643528.

The previous prime is 89643527. The next prime is 89643607. The reversal of 89643529 is 92534698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70107129 + 19536400 = 8373^2 + 4420^2 .

It is a cyclic number.

It is not a de Polignac number, because 89643529 - 2¹ = 89643527 is a prime.

Together with 89643527, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89643527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44821764 + 44821765.

It is an arithmetic number, because the mean of its divisors is an integer number (44821765).

Almost surely, 2^89643529 is an apocalyptic number.

It is an amenable number.

89643529 is a deficient number, since it is larger than the sum of its proper divisors (1).

89643529 is an equidigital number, since it uses as much as digits as its factorization.

89643529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 89643529 is about 9468.0266687415. The cubic root of 89643529 is about 447.5480285103.

The spelling of 89643529 in words is "eighty-nine million, six hundred forty-three thousand, five hundred twenty-nine".