3870947 has 2 divisors, whose sum is σ = 3870948. Its totient is φ = 3870946.

The previous prime is 3870941. The next prime is 3870953. The reversal of 3870947 is 7490783.

3870947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (3870941) and next prime (3870953).

It is an emirp because it is prime and its reverse (7490783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3870947 - 2²⁰ = 2822371 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3870947.

It is not a weakly prime, because it can be changed into another prime (3870941) 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, 1935473 + 1935474.

It is an arithmetic number, because the mean of its divisors is an integer number (1935474).

Almost surely, 2^3870947 is an apocalyptic number.

3870947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870947 is an equidigital number, since it uses as much as digits as its factorization.

3870947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 3870947 is about 1967.4722361446. The cubic root of 3870947 is about 157.0142521580.

The spelling of 3870947 in words is "three million, eight hundred seventy thousand, nine hundred forty-seven".