9979836 has 12 divisors (see below), whose sum is σ = 23286312. Its totient is φ = 3326608.

The previous prime is 9979819. The next prime is 9979843. The reversal of 9979836 is 6389799.

9979836 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415815 + ... + 415838.

It is an arithmetic number, because the mean of its divisors is an integer number (1940526).

Almost surely, 2^9979836 is an apocalyptic number.

It is an amenable number.

9979836 is an abundant number, since it is smaller than the sum of its proper divisors (13306476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9979836 is a wasteful number, since it uses less digits than its factorization.

9979836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831660 (or 831658 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 9979836 is about 3159.0878430332. The cubic root of 9979836 is about 215.2985648276.

The spelling of 9979836 in words is "nine million, nine hundred seventy-nine thousand, eight hundred thirty-six".