9138806 has 8 divisors (see below), whose sum is σ = 13732824. Its totient is φ = 4561200.

The previous prime is 9138803. The next prime is 9138839. The reversal of 9138806 is 6088319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2600 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (1716603).

Almost surely, 2^9138806 is an apocalyptic number.

9138806 is a deficient number, since it is larger than the sum of its proper divisors (4594018).

9138806 is a wasteful number, since it uses less digits than its factorization.

9138806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 9138806 is about 3023.0458150680. The cubic root of 9138806 is about 209.0722947627.

The spelling of 9138806 in words is "nine million, one hundred thirty-eight thousand, eight hundred six".