9966829 has 2 divisors, whose sum is σ = 9966830. Its totient is φ = 9966828.

The previous prime is 9966823. The next prime is 9966857. The reversal of 9966829 is 9286699.

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., 6734025 + 3232804 = 2595^2 + 1798^2 .

It is a cyclic number.

It is not a de Polignac number, because 9966829 - 2⁷ = 9966701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9966823) 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, 4983414 + 4983415.

It is an arithmetic number, because the mean of its divisors is an integer number (4983415).

Almost surely, 2^9966829 is an apocalyptic number.

It is an amenable number.

9966829 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966829 is an equidigital number, since it uses as much as digits as its factorization.

9966829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 49.

The square root of 9966829 is about 3157.0285079486. The cubic root of 9966829 is about 215.2049892778.

The spelling of 9966829 in words is "nine million, nine hundred sixty-six thousand, eight hundred twenty-nine".