3979925039 has 2 divisors, whose sum is σ = 3979925040. Its totient is φ = 3979925038.

The previous prime is 3979924999. The next prime is 3979925057. The reversal of 3979925039 is 9305299793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3979925039 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3979925069) 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, 1989962519 + 1989962520.

It is an arithmetic number, because the mean of its divisors is an integer number (1989962520).

Almost surely, 2^3979925039 is an apocalyptic number.

3979925039 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979925039 is an equidigital number, since it uses as much as digits as its factorization.

3979925039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4133430, while the sum is 56.

The square root of 3979925039 is about 63086.6470736875. The cubic root of 3979925039 is about 1584.7410124595.

The spelling of 3979925039 in words is "three billion, nine hundred seventy-nine million, nine hundred twenty-five thousand, thirty-nine".