9872979884 has 12 divisors (see below), whose sum is σ = 17278616208. Its totient is φ = 4936232400.

The previous prime is 9872979863. The next prime is 9872979911. The reversal of 9872979884 is 4889792789.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41054 + ... + 146394.

It is an arithmetic number, because the mean of its divisors is an integer number (1439884684).

Almost surely, 2^9872979884 is an apocalyptic number.

It is an amenable number.

9872979884 is a deficient number, since it is larger than the sum of its proper divisors (7405636324).

9872979884 is a wasteful number, since it uses less digits than its factorization.

9872979884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128776 (or 128774 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 71.

The square root of 9872979884 is about 99362.8697451920. The cubic root of 9872979884 is about 2145.2739082551.

The spelling of 9872979884 in words is "nine billion, eight hundred seventy-two million, nine hundred seventy-nine thousand, eight hundred eighty-four".