9989435 has 4 divisors (see below), whose sum is σ = 11987328. Its totient is φ = 7991544.

The previous prime is 9989431. The next prime is 9989437. The reversal of 9989435 is 5349899.

9989435 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 9989435 - 2² = 9989431 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 9989435.

It is not an unprimeable number, because it can be changed into a prime (9989431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998939 + ... + 998948.

It is an arithmetic number, because the mean of its divisors is an integer number (2996832).

Almost surely, 2^9989435 is an apocalyptic number.

9989435 is a deficient number, since it is larger than the sum of its proper divisors (1997893).

9989435 is a wasteful number, since it uses less digits than its factorization.

9989435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997892.

The product of its digits is 349920, while the sum is 47.

The square root of 9989435 is about 3160.6067455474. The cubic root of 9989435 is about 215.3675702596.

The spelling of 9989435 in words is "nine million, nine hundred eighty-nine thousand, four hundred thirty-five".