9809984 has 14 divisors (see below), whose sum is σ = 19466814. Its totient is φ = 4904960.

The previous prime is 9809971. The next prime is 9810001. The reversal of 9809984 is 4899089.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 25600 = 3128^2 + 160^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76577 + ... + 76704.

Almost surely, 2^9809984 is an apocalyptic number.

It is an amenable number.

9809984 is a deficient number, since it is larger than the sum of its proper divisors (9656830).

9809984 is a wasteful number, since it uses less digits than its factorization.

9809984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153293 (or 153283 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 9809984 is about 3132.0893984687. The cubic root of 9809984 is about 214.0701432510.

The spelling of 9809984 in words is "nine million, eight hundred nine thousand, nine hundred eighty-four".