9138836 has 24 divisors (see below), whose sum is σ = 18539136. Its totient is φ = 3860640.

The previous prime is 9138803. The next prime is 9138839. The reversal of 9138836 is 6388319.

It is a self number, because there is not a number n which added to its sum of digits gives 9138836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138839) 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 7 ways as a sum of consecutive naturals, for example, 311 + ... + 4286.

It is an arithmetic number, because the mean of its divisors is an integer number (772464).

Almost surely, 2^9138836 is an apocalyptic number.

It is an amenable number.

9138836 is an abundant number, since it is smaller than the sum of its proper divisors (9400300).

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

9138836 is a wasteful number, since it uses less digits than its factorization.

9138836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679 (or 4677 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 9138836 is about 3023.0507769470. The cubic root of 9138836 is about 209.0725235366.

The spelling of 9138836 in words is "nine million, one hundred thirty-eight thousand, eight hundred thirty-six".