3954965671 has 2 divisors, whose sum is σ = 3954965672. Its totient is φ = 3954965670.

The previous prime is 3954965669. The next prime is 3954965699. The reversal of 3954965671 is 1765694593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3954965671 - 2¹ = 3954965669 is a prime.

Together with 3954965669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3954960671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977482835 + 1977482836.

It is an arithmetic number, because the mean of its divisors is an integer number (1977482836).

Almost surely, 2^3954965671 is an apocalyptic number.

3954965671 is a deficient number, since it is larger than the sum of its proper divisors (1).

3954965671 is an equidigital number, since it uses as much as digits as its factorization.

3954965671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 55.

The square root of 3954965671 is about 62888.5177993567. The cubic root of 3954965671 is about 1581.4212590713.

The spelling of 3954965671 in words is "three billion, nine hundred fifty-four million, nine hundred sixty-five thousand, six hundred seventy-one".