3867386889 has 4 divisors (see below), whose sum is σ = 5156515856. Its totient is φ = 2578257924.

The previous prime is 3867386881. The next prime is 3867386947. The reversal of 3867386889 is 9886837683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9886837683 = 3 ⋅3295612561.

It is not a de Polignac number, because 3867386889 - 2³ = 3867386881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3867386881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644564479 + ... + 644564484.

It is an arithmetic number, because the mean of its divisors is an integer number (1289128964).

Almost surely, 2^3867386889 is an apocalyptic number.

It is an amenable number.

3867386889 is a deficient number, since it is larger than the sum of its proper divisors (1289128967).

3867386889 is a wasteful number, since it uses less digits than its factorization.

3867386889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289128966.

The product of its digits is 83607552, while the sum is 66.

The square root of 3867386889 is about 62188.3179463796. The cubic root of 3867386889 is about 1569.6610204371.

The spelling of 3867386889 in words is "three billion, eight hundred sixty-seven million, three hundred eighty-six thousand, eight hundred eighty-nine".