982434209 has 2 divisors, whose sum is σ = 982434210. Its totient is φ = 982434208.

The previous prime is 982434191. The next prime is 982434221. The reversal of 982434209 is 902434289.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 937584400 + 44849809 = 30620^2 + 6697^2 .

It is an emirp because it is prime and its reverse (902434289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 982434209 - 2²⁰ = 981385633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (982434239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491217104 + 491217105.

It is an arithmetic number, because the mean of its divisors is an integer number (491217105).

Almost surely, 2^982434209 is an apocalyptic number.

It is an amenable number.

982434209 is a deficient number, since it is larger than the sum of its proper divisors (1).

982434209 is an equidigital number, since it uses as much as digits as its factorization.

982434209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 982434209 is about 31343.8065493009. The cubic root of 982434209 is about 994.1101136807.

The spelling of 982434209 in words is "nine hundred eighty-two million, four hundred thirty-four thousand, two hundred nine".