3856986823 has 2 divisors, whose sum is σ = 3856986824. Its totient is φ = 3856986822.

The previous prime is 3856986769. The next prime is 3856986841. The reversal of 3856986823 is 3286896583.

It is a happy number.

3856986823 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3856986823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3856986223) 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, 1928493411 + 1928493412.

It is an arithmetic number, because the mean of its divisors is an integer number (1928493412).

Almost surely, 2^3856986823 is an apocalyptic number.

3856986823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3856986823 is an equidigital number, since it uses as much as digits as its factorization.

3856986823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 58.

The square root of 3856986823 is about 62104.6441339132. The cubic root of 3856986823 is about 1568.2527281564.

The spelling of 3856986823 in words is "three billion, eight hundred fifty-six million, nine hundred eighty-six thousand, eight hundred twenty-three".