4021919859 has 8 divisors (see below), whose sum is σ = 5390345872. Its totient is φ = 2667386880.

The previous prime is 4021919851. The next prime is 4021919917. The reversal of 4021919859 is 9589191204.

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

It is not a de Polignac number, because 4021919859 - 2³ = 4021919851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021919851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3472582 + ... + 3473739.

It is an arithmetic number, because the mean of its divisors is an integer number (673793234).

Almost surely, 2^4021919859 is an apocalyptic number.

4021919859 is a deficient number, since it is larger than the sum of its proper divisors (1368426013).

4021919859 is a wasteful number, since it uses less digits than its factorization.

4021919859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946517.

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 4021919859 is about 63418.6081446132. The cubic root of 4021919859 is about 1590.2954053404.

The spelling of 4021919859 in words is "four billion, twenty-one million, nine hundred nineteen thousand, eight hundred fifty-nine".