89159729 has 2 divisors, whose sum is σ = 89159730. Its totient is φ = 89159728.

The previous prime is 89159701. The next prime is 89159773. The reversal of 89159729 is 92795198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75082225 + 14077504 = 8665^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 89159729 - 2¹⁶ = 89094193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89159029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44579864 + 44579865.

It is an arithmetic number, because the mean of its divisors is an integer number (44579865).

Almost surely, 2^89159729 is an apocalyptic number.

It is an amenable number.

89159729 is a deficient number, since it is larger than the sum of its proper divisors (1).

89159729 is an equidigital number, since it uses as much as digits as its factorization.

89159729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 50.

The square root of 89159729 is about 9442.4429572013. The cubic root of 89159729 is about 446.7414470351.

The spelling of 89159729 in words is "eighty-nine million, one hundred fifty-nine thousand, seven hundred twenty-nine".