3138847 has 2 divisors, whose sum is σ = 3138848. Its totient is φ = 3138846.

The previous prime is 3138809. The next prime is 3138851. The reversal of 3138847 is 7488313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3138847 - 2¹¹ = 3136799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569423 + 1569424.

It is an arithmetic number, because the mean of its divisors is an integer number (1569424).

Almost surely, 2^3138847 is an apocalyptic number.

3138847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138847 is an equidigital number, since it uses as much as digits as its factorization.

3138847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 3138847 is about 1771.6791470241. The cubic root of 3138847 is about 146.4165094056.

The spelling of 3138847 in words is "three million, one hundred thirty-eight thousand, eight hundred forty-seven".