3947071 has 2 divisors, whose sum is σ = 3947072. Its totient is φ = 3947070.

The previous prime is 3947059. The next prime is 3947087. The reversal of 3947071 is 1707493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3947071 - 2¹⁵ = 3914303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3947051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973535 + 1973536.

It is an arithmetic number, because the mean of its divisors is an integer number (1973536).

Almost surely, 2^3947071 is an apocalyptic number.

3947071 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947071 is an equidigital number, since it uses as much as digits as its factorization.

3947071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 3947071 is about 1986.7236848641. The cubic root of 3947071 is about 158.0368311295.

The spelling of 3947071 in words is "three million, nine hundred forty-seven thousand, seventy-one".