9138047 has 2 divisors, whose sum is σ = 9138048. Its totient is φ = 9138046.

The previous prime is 9138043. The next prime is 9138049. The reversal of 9138047 is 7408319.

9138047 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9138047 - 2² = 9138043 is a prime.

Together with 9138049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9138043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4569023 + 4569024.

It is an arithmetic number, because the mean of its divisors is an integer number (4569024).

Almost surely, 2^9138047 is an apocalyptic number.

9138047 is a deficient number, since it is larger than the sum of its proper divisors (1).

9138047 is an equidigital number, since it uses as much as digits as its factorization.

9138047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 9138047 is about 3022.9202768184. The cubic root of 9138047 is about 209.0665066154.

The spelling of 9138047 in words is "nine million, one hundred thirty-eight thousand, forty-seven".