9806729 has 2 divisors, whose sum is σ = 9806730. Its totient is φ = 9806728.

The previous prime is 9806701. The next prime is 9806759. The reversal of 9806729 is 9276089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5175625 + 4631104 = 2275^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 9806729 - 2¹² = 9802633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9806759) 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, 4903364 + 4903365.

It is an arithmetic number, because the mean of its divisors is an integer number (4903365).

Almost surely, 2^9806729 is an apocalyptic number.

It is an amenable number.

9806729 is a deficient number, since it is larger than the sum of its proper divisors (1).

9806729 is an equidigital number, since it uses as much as digits as its factorization.

9806729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9806729 is about 3131.5697341749. The cubic root of 9806729 is about 214.0464641299.

The spelling of 9806729 in words is "nine million, eight hundred six thousand, seven hundred twenty-nine".