9990835 has 16 divisors (see below), whose sum is σ = 12672000. Its totient is φ = 7549920.

The previous prime is 9990833. The next prime is 9990847. The reversal of 9990835 is 5380999.

9990835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9990835 - 2¹ = 9990833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 9990791 and 9990800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5916 + ... + 7414.

It is an arithmetic number, because the mean of its divisors is an integer number (792000).

Almost surely, 2^9990835 is an apocalyptic number.

9990835 is a deficient number, since it is larger than the sum of its proper divisors (2681165).

9990835 is a wasteful number, since it uses less digits than its factorization.

9990835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9990835 is about 3160.8282142502. The cubic root of 9990835 is about 215.3776309058.

The spelling of 9990835 in words is "nine million, nine hundred ninety thousand, eight hundred thirty-five".