9906829 has 4 divisors (see below), whose sum is σ = 9921184. Its totient is φ = 9892476.

The previous prime is 9906791. The next prime is 9906833. The reversal of 9906829 is 9286099.

9906829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9286099 = 1579 ⋅5881.

It is a cyclic number.

It is not a de Polignac number, because 9906829 - 2¹¹ = 9904781 is a prime.

It is a Duffinian number.

9906829 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6087 + ... + 7540.

It is an arithmetic number, because the mean of its divisors is an integer number (2480296).

Almost surely, 2^9906829 is an apocalyptic number.

It is an amenable number.

9906829 is a deficient number, since it is larger than the sum of its proper divisors (14355).

9906829 is a wasteful number, since it uses less digits than its factorization.

9906829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14354.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 9906829 is about 3147.5115567699. The cubic root of 9906829 is about 214.7722773655.

The spelling of 9906829 in words is "nine million, nine hundred six thousand, eight hundred twenty-nine".