984448021 has 2 divisors, whose sum is σ = 984448022. Its totient is φ = 984448020.

The previous prime is 984448013. The next prime is 984448027. The reversal of 984448021 is 120844489.

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., 794394225 + 190053796 = 28185^2 + 13786^2 .

It is an emirp because it is prime and its reverse (120844489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 984448021 - 2³ = 984448013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984448027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492224010 + 492224011.

It is an arithmetic number, because the mean of its divisors is an integer number (492224011).

Almost surely, 2^984448021 is an apocalyptic number.

It is an amenable number.

984448021 is a deficient number, since it is larger than the sum of its proper divisors (1).

984448021 is an equidigital number, since it uses as much as digits as its factorization.

984448021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 984448021 is about 31375.9146639584. The cubic root of 984448021 is about 994.7888985923.

The spelling of 984448021 in words is "nine hundred eighty-four million, four hundred forty-eight thousand, twenty-one".