4328955721 has 2 divisors, whose sum is σ = 4328955722. Its totient is φ = 4328955720.

The previous prime is 4328955713. The next prime is 4328955737. The reversal of 4328955721 is 1275598234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3860882496 + 468073225 = 62136^2 + 21635^2 .

It is a cyclic number.

It is not a de Polignac number, because 4328955721 - 2³ = 4328955713 is a prime.

It is not a weakly prime, because it can be changed into another prime (4328955751) 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, 2164477860 + 2164477861.

It is an arithmetic number, because the mean of its divisors is an integer number (2164477861).

Almost surely, 2^4328955721 is an apocalyptic number.

It is an amenable number.

4328955721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4328955721 is an equidigital number, since it uses as much as digits as its factorization.

4328955721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 4328955721 is about 65794.8001060874. The cubic root of 4328955721 is about 1629.7752360488.

The spelling of 4328955721 in words is "four billion, three hundred twenty-eight million, nine hundred fifty-five thousand, seven hundred twenty-one".