9879988 has 12 divisors (see below), whose sum is σ = 17498880. Its totient is φ = 4880312.

The previous prime is 9879983. The next prime is 9879997. The reversal of 9879988 is 8899789.

It is a super-2 number, since 2×9879988² = 195228325760288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879983) 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, 14548 + ... + 15211.

It is an arithmetic number, because the mean of its divisors is an integer number (1458240).

Almost surely, 2^9879988 is an apocalyptic number.

It is an amenable number.

9879988 is a deficient number, since it is larger than the sum of its proper divisors (7618892).

9879988 is a wasteful number, since it uses less digits than its factorization.

9879988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29846 (or 29844 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The square root of 9879988 is about 3143.2448202455. The cubic root of 9879988 is about 214.5781379917.

The spelling of 9879988 in words is "nine million, eight hundred seventy-nine thousand, nine hundred eighty-eight".