1984052209 has 2 divisors, whose sum is σ = 1984052210. Its totient is φ = 1984052208.

The previous prime is 1984052171. The next prime is 1984052227. The reversal of 1984052209 is 9022504891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1402277809 + 581774400 = 37447^2 + 24120^2 .

It is an emirp because it is prime and its reverse (9022504891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1984052209 - 2⁹ = 1984051697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1984052249) 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, 992026104 + 992026105.

It is an arithmetic number, because the mean of its divisors is an integer number (992026105).

Almost surely, 2^1984052209 is an apocalyptic number.

It is an amenable number.

1984052209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984052209 is an equidigital number, since it uses as much as digits as its factorization.

1984052209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1984052209 is about 44542.7009621105. The cubic root of 1984052209 is about 1256.5632829259.

The spelling of 1984052209 in words is "one billion, nine hundred eighty-four million, fifty-two thousand, two hundred nine".