3859378840 has 64 divisors (see below), whose sum is σ = 9077391360. Its totient is φ = 1473985920.

The previous prime is 3859378801. The next prime is 3859378847. The reversal of 3859378840 is 488739583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3859378847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554985 + ... + 561895.

It is an arithmetic number, because the mean of its divisors is an integer number (141834240).

Almost surely, 2^3859378840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3859378840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4538695680).

3859378840 is an abundant number, since it is smaller than the sum of its proper divisors (5218012520).

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

3859378840 is a wasteful number, since it uses less digits than its factorization.

3859378840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7552 (or 7548 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 3859378840 is about 62123.8991049338. The cubic root of 3859378840 is about 1568.5768595865.

The spelling of 3859378840 in words is "three billion, eight hundred fifty-nine million, three hundred seventy-eight thousand, eight hundred forty".