3939971351 has 2 divisors, whose sum is σ = 3939971352. Its totient is φ = 3939971350.

The previous prime is 3939971333. The next prime is 3939971417. The reversal of 3939971351 is 1531799393.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3939971351 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3939971351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3939971311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969985675 + 1969985676.

It is an arithmetic number, because the mean of its divisors is an integer number (1969985676).

Almost surely, 2^3939971351 is an apocalyptic number.

3939971351 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939971351 is an equidigital number, since it uses as much as digits as its factorization.

3939971351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 688905, while the sum is 50.

The square root of 3939971351 is about 62769.1910972254. The cubic root of 3939971351 is about 1579.4201994546.

The spelling of 3939971351 in words is "three billion, nine hundred thirty-nine million, nine hundred seventy-one thousand, three hundred fifty-one".