344738809 has 2 divisors, whose sum is σ = 344738810. Its totient is φ = 344738808.

The previous prime is 344738791. The next prime is 344738839. The reversal of 344738809 is 908837443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343286784 + 1452025 = 18528^2 + 1205^2 .

It is an emirp because it is prime and its reverse (908837443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344738809 - 2⁹ = 344738297 is a prime.

It is not a weakly prime, because it can be changed into another prime (344738839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172369404 + 172369405.

It is an arithmetic number, because the mean of its divisors is an integer number (172369405).

Almost surely, 2^344738809 is an apocalyptic number.

It is an amenable number.

344738809 is a deficient number, since it is larger than the sum of its proper divisors (1).

344738809 is an equidigital number, since it uses as much as digits as its factorization.

344738809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 344738809 is about 18567.1432643797. The cubic root of 344738809 is about 701.1808700678.

The spelling of 344738809 in words is "three hundred forty-four million, seven hundred thirty-eight thousand, eight hundred nine".