9979123 has 24 divisors (see below), whose sum is σ = 13167360. Its totient is φ = 7346160.

The previous prime is 9979111. The next prime is 9979127. The reversal of 9979123 is 3219799.

It is not a de Polignac number, because 9979123 - 2⁵ = 9979091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9979127) 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 23 ways as a sum of consecutive naturals, for example, 27618 + ... + 27976.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^9979123 is an apocalyptic number.

9979123 is a deficient number, since it is larger than the sum of its proper divisors (3188237).

9979123 is a wasteful number, since it uses less digits than its factorization.

9979123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 396 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 9979123 is about 3158.9749919871. The cubic root of 9979123 is about 215.2934374377.

The spelling of 9979123 in words is "nine million, nine hundred seventy-nine thousand, one hundred twenty-three".