4798849921 has 2 divisors, whose sum is σ = 4798849922. Its totient is φ = 4798849920.

The previous prime is 4798849889. The next prime is 4798849933. The reversal of 4798849921 is 1299488974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3126039921 + 1672810000 = 55911^2 + 40900^2 .

It is a cyclic number.

It is not a de Polignac number, because 4798849921 - 2⁵ = 4798849889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4798849921.

It is not a weakly prime, because it can be changed into another prime (4798849621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2399424960 + 2399424961.

It is an arithmetic number, because the mean of its divisors is an integer number (2399424961).

Almost surely, 2^4798849921 is an apocalyptic number.

It is an amenable number.

4798849921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4798849921 is an equidigital number, since it uses as much as digits as its factorization.

4798849921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The square root of 4798849921 is about 69273.7318252741. The cubic root of 4798849921 is about 1686.7305956482.

The spelling of 4798849921 in words is "four billion, seven hundred ninety-eight million, eight hundred forty-nine thousand, nine hundred twenty-one".