3925821875879 has 2 divisors, whose sum is σ = 3925821875880. Its totient is φ = 3925821875878.

The previous prime is 3925821875861. The next prime is 3925821875909. The reversal of 3925821875879 is 9785781285293.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3925821875879 - 2⁸ = 3925821875623 is a prime.

It is a super-2 number, since 2×3925821875879² (a number of 26 digits) contains 22 as substring.

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 (3925821875839) 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, 1962910937939 + 1962910937940.

It is an arithmetic number, because the mean of its divisors is an integer number (1962910937940).

Almost surely, 2^{3925821875879} is an apocalyptic number.

3925821875879 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925821875879 is an equidigital number, since it uses as much as digits as its factorization.

3925821875879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 609638400, while the sum is 74.

The spelling of 3925821875879 in words is "three trillion, nine hundred twenty-five billion, eight hundred twenty-one million, eight hundred seventy-five thousand, eight hundred seventy-nine".