3984971 has 2 divisors, whose sum is σ = 3984972. Its totient is φ = 3984970.

The previous prime is 3984949. The next prime is 3984983. The reversal of 3984971 is 1794893.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1794893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3984971 - 2¹⁸ = 3722827 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3984941) 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, 1992485 + 1992486.

It is an arithmetic number, because the mean of its divisors is an integer number (1992486).

Almost surely, 2^3984971 is an apocalyptic number.

3984971 is a deficient number, since it is larger than the sum of its proper divisors (1).

3984971 is an equidigital number, since it uses as much as digits as its factorization.

3984971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 3984971 is about 1996.2392141224. The cubic root of 3984971 is about 158.5410469310.

The spelling of 3984971 in words is "three million, nine hundred eighty-four thousand, nine hundred seventy-one".