3871447 has 2 divisors, whose sum is σ = 3871448. Its totient is φ = 3871446.

The previous prime is 3871433. The next prime is 3871481. The reversal of 3871447 is 7441783.

It is an a-pointer prime, because the next prime (3871481) can be obtained adding 3871447 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3871447 - 2⁷ = 3871319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871547) 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, 1935723 + 1935724.

It is an arithmetic number, because the mean of its divisors is an integer number (1935724).

Almost surely, 2^3871447 is an apocalyptic number.

3871447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871447 is an equidigital number, since it uses as much as digits as its factorization.

3871447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 3871447 is about 1967.5992986378. The cubic root of 3871447 is about 157.0210122390.

The spelling of 3871447 in words is "three million, eight hundred seventy-one thousand, four hundred forty-seven".