339408109 has 2 divisors, whose sum is σ = 339408110. Its totient is φ = 339408108.

The previous prime is 339408107. The next prime is 339408137. The reversal of 339408109 is 901804933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339370084 + 38025 = 18422^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 339408109 - 2¹ = 339408107 is a prime.

Together with 339408107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (339408101) 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, 169704054 + 169704055.

It is an arithmetic number, because the mean of its divisors is an integer number (169704055).

Almost surely, 2^339408109 is an apocalyptic number.

It is an amenable number.

339408109 is a deficient number, since it is larger than the sum of its proper divisors (1).

339408109 is an equidigital number, since it uses as much as digits as its factorization.

339408109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 339408109 is about 18423.0320251581. The cubic root of 339408109 is about 697.5479574602.

The spelling of 339408109 in words is "three hundred thirty-nine million, four hundred eight thousand, one hundred nine".