3949116971 has 2 divisors, whose sum is σ = 3949116972. Its totient is φ = 3949116970.

The previous prime is 3949116953. The next prime is 3949117037. The reversal of 3949116971 is 1796119493.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3949116971 - 2¹⁸ = 3948854827 is a prime.

It is not a weakly prime, because it can be changed into another prime (3949116901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974558485 + 1974558486.

It is an arithmetic number, because the mean of its divisors is an integer number (1974558486).

Almost surely, 2^3949116971 is an apocalyptic number.

3949116971 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949116971 is an equidigital number, since it uses as much as digits as its factorization.

3949116971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 3949116971 is about 62842.0000556952. Note that the first 4 decimals coincide. The cubic root of 3949116971 is about 1580.6413263335.

The spelling of 3949116971 in words is "three billion, nine hundred forty-nine million, one hundred sixteen thousand, nine hundred seventy-one".