4428021473 has 2 divisors, whose sum is σ = 4428021474. Its totient is φ = 4428021472.

The previous prime is 4428021469. The next prime is 4428021487. The reversal of 4428021473 is 3741208244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3526340689 + 901680784 = 59383^2 + 30028^2 .

It is a cyclic number.

It is not a de Polignac number, because 4428021473 - 2² = 4428021469 is a prime.

It is not a weakly prime, because it can be changed into another prime (4428021413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2214010736 + 2214010737.

It is an arithmetic number, because the mean of its divisors is an integer number (2214010737).

Almost surely, 2^4428021473 is an apocalyptic number.

It is an amenable number.

4428021473 is a deficient number, since it is larger than the sum of its proper divisors (1).

4428021473 is an equidigital number, since it uses as much as digits as its factorization.

4428021473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 4428021473 is about 66543.3803845281. The cubic root of 4428021473 is about 1642.1137568354.

The spelling of 4428021473 in words is "four billion, four hundred twenty-eight million, twenty-one thousand, four hundred seventy-three".