4879465821 has 6 divisors (see below), whose sum is σ = 7048117310. Its totient is φ = 3252977208.

The previous prime is 4879465777. The next prime is 4879465859. The reversal of 4879465821 is 1285649784.

It is a happy number.

4879465821 is a `hidden beast` number, since 487 + 94 + 6 + 58 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4854605625 + 24860196 = 69675^2 + 4986^2 .

It is not a de Polignac number, because 4879465821 - 2²¹ = 4877368669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4879465121) 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 5 ways as a sum of consecutive naturals, for example, 271081426 + ... + 271081443.

Almost surely, 2^4879465821 is an apocalyptic number.

It is an amenable number.

4879465821 is a deficient number, since it is larger than the sum of its proper divisors (2168651489).

4879465821 is a wasteful number, since it uses less digits than its factorization.

4879465821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542162875 (or 542162872 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 4879465821 is about 69853.1733065864. The cubic root of 4879465821 is about 1696.1233256494.

The spelling of 4879465821 in words is "four billion, eight hundred seventy-nine million, four hundred sixty-five thousand, eight hundred twenty-one".