3869489885 has 8 divisors (see below), whose sum is σ = 4643776440. Its totient is φ = 3095332864.

The previous prime is 3869489873. The next prime is 3869489887. The reversal of 3869489885 is 5889849683.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 3869213209 = 526^2 + 62203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3869489885 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869489887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54569 + ... + 103521.

It is an arithmetic number, because the mean of its divisors is an integer number (580472055).

Almost surely, 2^3869489885 is an apocalyptic number.

It is an amenable number.

3869489885 is a deficient number, since it is larger than the sum of its proper divisors (774286555).

3869489885 is a wasteful number, since it uses less digits than its factorization.

3869489885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64767.

The product of its digits is 119439360, while the sum is 68.

The square root of 3869489885 is about 62205.2239365795. The cubic root of 3869489885 is about 1569.9454840632.

The spelling of 3869489885 in words is "three billion, eight hundred sixty-nine million, four hundred eighty-nine thousand, eight hundred eighty-five".