9918836 has 18 divisors (see below), whose sum is σ = 18322290. Its totient is φ = 4697712.

The previous prime is 9918787. The next prime is 9918851. The reversal of 9918836 is 6388199.

It can be written as a sum of positive squares in only one way, i.e., 5550736 + 4368100 = 2356^2 + 2090^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1991 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (1017905).

Almost surely, 2^9918836 is an apocalyptic number.

It is an amenable number.

9918836 is a deficient number, since it is larger than the sum of its proper divisors (8403454).

9918836 is a wasteful number, since it uses less digits than its factorization.

9918836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911 (or 6890 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 9918836 is about 3149.4183589990. The cubic root of 9918836 is about 214.8590097807.

The spelling of 9918836 in words is "nine million, nine hundred eighteen thousand, eight hundred thirty-six".