3985712111 has 2 divisors, whose sum is σ = 3985712112. Its totient is φ = 3985712110.

The previous prime is 3985711997. The next prime is 3985712153. The reversal of 3985712111 is 1112175893.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1112175893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3985712111 - 2³⁰ = 2911970287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985717111) 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, 1992856055 + 1992856056.

It is an arithmetic number, because the mean of its divisors is an integer number (1992856056).

Almost surely, 2^3985712111 is an apocalyptic number.

3985712111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985712111 is an equidigital number, since it uses as much as digits as its factorization.

3985712111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 3985712111 is about 63132.4964736862. The cubic root of 3985712111 is about 1585.5087462530.

The spelling of 3985712111 in words is "three billion, nine hundred eighty-five million, seven hundred twelve thousand, one hundred eleven".