4021869384 has 384 divisors, whose sum is σ = 13373942400. Its totient is φ = 1078272000.

The previous prime is 4021869361. The next prime is 4021869391. The reversal of 4021869384 is 4839681204.

It is a happy number.

4021869384 is a `hidden beast` number, since 402 + 1 + 86 + 93 + 84 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16023259 + ... + 16023509.

It is an arithmetic number, because the mean of its divisors is an integer number (34827975).

Almost surely, 2^4021869384 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 4021869384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6686971200).

4021869384 is an abundant number, since it is smaller than the sum of its proper divisors (9352073016).

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

4021869384 is a wasteful number, since it uses less digits than its factorization.

4021869384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 4021869384 is about 63418.2101923414. The cubic root of 4021869384 is about 1590.2887525892.

The spelling of 4021869384 in words is "four billion, twenty-one million, eight hundred sixty-nine thousand, three hundred eighty-four".