3985796111 has 4 divisors (see below), whose sum is σ = 4348141224. Its totient is φ = 3623451000.

The previous prime is 3985796053. The next prime is 3985796123. The reversal of 3985796111 is 1116975893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3985796111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3985796111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985796141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181172540 + ... + 181172561.

It is an arithmetic number, because the mean of its divisors is an integer number (1087035306).

Almost surely, 2^3985796111 is an apocalyptic number.

3985796111 is a deficient number, since it is larger than the sum of its proper divisors (362345113).

3985796111 is a wasteful number, since it uses less digits than its factorization.

3985796111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362345112.

The product of its digits is 408240, while the sum is 50.

The square root of 3985796111 is about 63133.1617377112. The cubic root of 3985796111 is about 1585.5198845218.

The spelling of 3985796111 in words is "three billion, nine hundred eighty-five million, seven hundred ninety-six thousand, one hundred eleven".