9989436 has 24 divisors (see below), whose sum is σ = 23385600. Its totient is φ = 3318832.

The previous prime is 9989431. The next prime is 9989437. The reversal of 9989436 is 6349899.

It is a happy number.

9989436 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9989431) 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, 2965 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (974400).

Almost surely, 2^9989436 is an apocalyptic number.

It is an amenable number.

9989436 is an abundant number, since it is smaller than the sum of its proper divisors (13396164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9989436 is a wasteful number, since it uses less digits than its factorization.

9989436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753 (or 2751 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 9989436 is about 3160.6069037449. The cubic root of 9989436 is about 215.3675774461.

The spelling of 9989436 in words is "nine million, nine hundred eighty-nine thousand, four hundred thirty-six".