4905484821 has 20 divisors (see below), whose sum is σ = 7580637900. Its totient is φ = 3157551936.

The previous prime is 4905484739. The next prime is 4905484853. The reversal of 4905484821 is 1284845094.

4905484821 is a `hidden beast` number, since 4 + 90 + 5 + 484 + 82 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 855562500 + 4049922321 = 29250^2 + 63639^2 .

It is not a de Polignac number, because 4905484821 - 2¹¹ = 4905482773 is a prime.

It is a super-2 number, since 2×4905484821² = 48127562658122804082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4905484891) 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 19 ways as a sum of consecutive naturals, for example, 1041816 + ... + 1046513.

It is an arithmetic number, because the mean of its divisors is an integer number (379031895).

Almost surely, 2^4905484821 is an apocalyptic number.

It is an amenable number.

4905484821 is a deficient number, since it is larger than the sum of its proper divisors (2675153079).

4905484821 is a wasteful number, since it uses less digits than its factorization.

4905484821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088370 (or 2088361 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 4905484821 is about 70039.1663357011. The cubic root of 4905484821 is about 1699.1327550025.

The spelling of 4905484821 in words is "four billion, nine hundred five million, four hundred eighty-four thousand, eight hundred twenty-one".