9999829 has 8 divisors (see below), whose sum is σ = 11448000. Its totient is φ = 8556576.

The previous prime is 9999823. The next prime is 9999863. The reversal of 9999829 is 9289999.

9999829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9999829 - 2⁹ = 9999317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5922 + ... + 7420.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^9999829 is an apocalyptic number.

It is an amenable number.

9999829 is a deficient number, since it is larger than the sum of its proper divisors (1448171).

9999829 is a wasteful number, since it uses less digits than its factorization.

9999829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its digits is 944784, while the sum is 55.

The square root of 9999829 is about 3162.2506225788. The cubic root of 9999829 is about 215.4422409684.

The spelling of 9999829 in words is "nine million, nine hundred ninety-nine thousand, eight hundred twenty-nine".