4879879921 has 8 divisors (see below), whose sum is σ = 5608163520. Its totient is φ = 4159385808.

The previous prime is 4879879867. The next prime is 4879879981. The reversal of 4879879921 is 1299789784.

It is a happy number.

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 4879879921 - 2²¹ = 4877782769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4879879981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946026 + ... + 1948531.

It is an arithmetic number, because the mean of its divisors is an integer number (701020440).

Almost surely, 2^4879879921 is an apocalyptic number.

It is an amenable number.

4879879921 is a deficient number, since it is larger than the sum of its proper divisors (728283599).

4879879921 is a wasteful number, since it uses less digits than its factorization.

4879879921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894743.

The product of its digits is 18289152, while the sum is 64.

The square root of 4879879921 is about 69856.1373180625. The cubic root of 4879879921 is about 1696.1713052731.

The spelling of 4879879921 in words is "four billion, eight hundred seventy-nine million, eight hundred seventy-nine thousand, nine hundred twenty-one".