9984428 has 12 divisors (see below), whose sum is σ = 17879400. Its totient is φ = 4876032.

The previous prime is 9984421. The next prime is 9984431. The reversal of 9984428 is 8244899.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9984421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28853 + ... + 29196.

It is an arithmetic number, because the mean of its divisors is an integer number (1489950).

Almost surely, 2^9984428 is an apocalyptic number.

It is an amenable number.

9984428 is a deficient number, since it is larger than the sum of its proper divisors (7894972).

9984428 is a wasteful number, since it uses less digits than its factorization.

9984428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58096 (or 58094 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 9984428 is about 3159.8145515204. The cubic root of 9984428 is about 215.3315813826.

It can be divided in two parts, 998 and 4428, that multiplied together give a palindrome (4419144).

The spelling of 9984428 in words is "nine million, nine hundred eighty-four thousand, four hundred twenty-eight".