4788821 has 2 divisors, whose sum is σ = 4788822. Its totient is φ = 4788820.

The previous prime is 4788811. The next prime is 4788863. The reversal of 4788821 is 1288874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2686321 + 2102500 = 1639^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 4788821 - 2⁶ = 4788757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4788811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2394410 + 2394411.

It is an arithmetic number, because the mean of its divisors is an integer number (2394411).

Almost surely, 2^4788821 is an apocalyptic number.

It is an amenable number.

4788821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4788821 is an equidigital number, since it uses as much as digits as its factorization.

4788821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 38.

The square root of 4788821 is about 2188.3374968226. The cubic root of 4788821 is about 168.5554766303. Note that the first 3 decimals are identical.

The spelling of 4788821 in words is "four million, seven hundred eighty-eight thousand, eight hundred twenty-one".