4488566921 has 2 divisors, whose sum is σ = 4488566922. Its totient is φ = 4488566920.

The previous prime is 4488566893. The next prime is 4488566981. The reversal of 4488566921 is 1296658844.

4488566921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2476057600 + 2012509321 = 49760^2 + 44861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4488566921 - 2¹⁴ = 4488550537 is a prime.

It is not a weakly prime, because it can be changed into another prime (4488566981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2244283460 + 2244283461.

It is an arithmetic number, because the mean of its divisors is an integer number (2244283461).

Almost surely, 2^4488566921 is an apocalyptic number.

It is an amenable number.

4488566921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4488566921 is an equidigital number, since it uses as much as digits as its factorization.

4488566921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 53.

The square root of 4488566921 is about 66996.7679892097. The cubic root of 4488566921 is about 1649.5642462406.

The spelling of 4488566921 in words is "four billion, four hundred eighty-eight million, five hundred sixty-six thousand, nine hundred twenty-one".