6138947 has 2 divisors, whose sum is σ = 6138948. Its totient is φ = 6138946.

The previous prime is 6138901. The next prime is 6138983. The reversal of 6138947 is 7498316.

6138947 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 6138947 - 2⁶ = 6138883 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6138947.

It is not a weakly prime, because it can be changed into another prime (6138347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069473 + 3069474.

It is an arithmetic number, because the mean of its divisors is an integer number (3069474).

Almost surely, 2^6138947 is an apocalyptic number.

6138947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6138947 is an equidigital number, since it uses as much as digits as its factorization.

6138947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 6138947 is about 2477.6898514544. The cubic root of 6138947 is about 183.1040546115.

The spelling of 6138947 in words is "six million, one hundred thirty-eight thousand, nine hundred forty-seven".