3139847 has 2 divisors, whose sum is σ = 3139848. Its totient is φ = 3139846.

The previous prime is 3139841. The next prime is 3139861. The reversal of 3139847 is 7489313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3139847 - 2¹⁸ = 2877703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3139841) 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 as a sum of consecutive naturals, namely, 1569923 + 1569924.

It is an arithmetic number, because the mean of its divisors is an integer number (1569924).

Almost surely, 2^3139847 is an apocalyptic number.

3139847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139847 is an equidigital number, since it uses as much as digits as its factorization.

3139847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 3139847 is about 1771.9613426935. The cubic root of 3139847 is about 146.4320566180.

The spelling of 3139847 in words is "three million, one hundred thirty-nine thousand, eight hundred forty-seven".