3867847 has 2 divisors, whose sum is σ = 3867848. Its totient is φ = 3867846.

The previous prime is 3867803. The next prime is 3867859. The reversal of 3867847 is 7487683.

3867847 is digitally balanced in base 2, 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 3867847 - 2¹⁵ = 3835079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3867047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933923 + 1933924.

It is an arithmetic number, because the mean of its divisors is an integer number (1933924).

Almost surely, 2^3867847 is an apocalyptic number.

3867847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867847 is an equidigital number, since it uses as much as digits as its factorization.

3867847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 3867847 is about 1966.6842654580. The cubic root of 3867847 is about 156.9723266572.

The spelling of 3867847 in words is "three million, eight hundred sixty-seven thousand, eight hundred forty-seven".