9978832984 has 16 divisors (see below), whose sum is σ = 19695065400. Its totient is φ = 4726815552.

The previous prime is 9978832979. The next prime is 9978832987. The reversal of 9978832984 is 4892388799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978832987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32824957 + ... + 32825260.

Almost surely, 2^9978832984 is an apocalyptic number.

It is an amenable number.

9978832984 is a deficient number, since it is larger than the sum of its proper divisors (9716232416).

9978832984 is a wasteful number, since it uses less digits than its factorization.

9978832984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65650242 (or 65650238 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 67.

The square root of 9978832984 is about 99894.1088553274. The cubic root of 9978832984 is about 2152.9135177854.

The spelling of 9978832984 in words is "nine billion, nine hundred seventy-eight million, eight hundred thirty-two thousand, nine hundred eighty-four".