3869444827878 has 64 divisors (see below), whose sum is σ = 9002771136000. Its totient is φ = 1085800022784.

The previous prime is 3869444827877. The next prime is 3869444827889. The reversal of 3869444827878 is 8787284449683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869444827877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1918618 + ... + 3379346.

It is an arithmetic number, because the mean of its divisors is an integer number (140668299000).

Almost surely, 2^{3869444827878} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3869444827878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4501385568000).

3869444827878 is an abundant number, since it is smaller than the sum of its proper divisors (5133326308122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3869444827878 is a wasteful number, since it uses less digits than its factorization.

3869444827878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461869.

The product of its digits is 4161798144, while the sum is 78.

The spelling of 3869444827878 in words is "three trillion, eight hundred sixty-nine billion, four hundred forty-four million, eight hundred twenty-seven thousand, eight hundred seventy-eight".