4808870021 has 2 divisors, whose sum is σ = 4808870022. Its totient is φ = 4808870020.

The previous prime is 4808869997. The next prime is 4808870023. The reversal of 4808870021 is 1200788084.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4671722500 + 137147521 = 68350^2 + 11711^2 .

It is a cyclic number.

It is not a de Polignac number, because 4808870021 - 2¹⁸ = 4808607877 is a prime.

It is a super-3 number, since 3×4808870021³ (a number of 30 digits) contains 333 as substring.

Together with 4808870023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4808870023) 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 as a sum of consecutive naturals, namely, 2404435010 + 2404435011.

It is an arithmetic number, because the mean of its divisors is an integer number (2404435011).

Almost surely, 2^4808870021 is an apocalyptic number.

It is an amenable number.

4808870021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4808870021 is an equidigital number, since it uses as much as digits as its factorization.

4808870021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4808870021 is about 69346.0166195579. The cubic root of 4808870021 is about 1687.9037558696.

The spelling of 4808870021 in words is "four billion, eight hundred eight million, eight hundred seventy thousand, twenty-one".