4879815721 has 8 divisors (see below), whose sum is σ = 5345712000. Its totient is φ = 4417632240.

The previous prime is 4879815691. The next prime is 4879815727. The reversal of 4879815721 is 1275189784.

4879815721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4879815721 - 2⁹ = 4879815209 is a prime.

It is a super-3 number, since 3×4879815721³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4879815727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925446 + ... + 930703.

It is an arithmetic number, because the mean of its divisors is an integer number (668214000).

Almost surely, 2^4879815721 is an apocalyptic number.

It is an amenable number.

4879815721 is a deficient number, since it is larger than the sum of its proper divisors (465896279).

4879815721 is a wasteful number, since it uses less digits than its factorization.

4879815721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856399.

The product of its digits is 1128960, while the sum is 52.

The square root of 4879815721 is about 69855.6778007343. The cubic root of 4879815721 is about 1696.1638669292.

The spelling of 4879815721 in words is "four billion, eight hundred seventy-nine million, eight hundred fifteen thousand, seven hundred twenty-one".