3888887885 has 4 divisors (see below), whose sum is σ = 4666665468. Its totient is φ = 3111110304.

The previous prime is 3888887867. The next prime is 3888887897. The reversal of 3888887885 is 5887888883.

3888887885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5887888883 = 67139 ⋅87697.

It can be written as a sum of positive squares in 2 ways, for example, as 2572214089 + 1316673796 = 50717^2 + 36286^2 .

It is a cyclic number.

It is not a de Polignac number, because 3888887885 - 2¹⁰ = 3888886861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 388888784 + ... + 388888793.

It is an arithmetic number, because the mean of its divisors is an integer number (1166666367).

Almost surely, 2^3888887885 is an apocalyptic number.

It is an amenable number.

3888887885 is a deficient number, since it is larger than the sum of its proper divisors (777777583).

3888887885 is an equidigital number, since it uses as much as digits as its factorization.

3888887885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777777582.

The product of its digits is 220200960, while the sum is 71.

The square root of 3888887885 is about 62360.9483972141. The cubic root of 3888887885 is about 1572.5645247901.

The spelling of 3888887885 in words is "three billion, eight hundred eighty-eight million, eight hundred eighty-seven thousand, eight hundred eighty-five".