3859021872 has 40 divisors (see below), whose sum is σ = 11076823280. Its totient is φ = 1286340480.

The previous prime is 3859021867. The next prime is 3859021877. The reversal of 3859021872 is 2781209583.

It is a happy number.

3859021872 is a `hidden beast` number, since 38 + 590 + 21 + 8 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (3859021867) and next prime (3859021877).

It is not an unprimeable number, because it can be changed into a prime (3859021877) 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, 4466029 + ... + 4466892.

It is an arithmetic number, because the mean of its divisors is an integer number (276920582).

Almost surely, 2^3859021872 is an apocalyptic number.

It is an amenable number.

3859021872 is an abundant number, since it is smaller than the sum of its proper divisors (7217801408).

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

3859021872 is a wasteful number, since it uses less digits than its factorization.

3859021872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932938 (or 8932926 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 3859021872 is about 62121.0260056931. The cubic root of 3859021872 is about 1568.5284969672.

The spelling of 3859021872 in words is "three billion, eight hundred fifty-nine million, twenty-one thousand, eight hundred seventy-two".