344322409 has 2 divisors, whose sum is σ = 344322410. Its totient is φ = 344322408.

The previous prime is 344322383. The next prime is 344322439. The reversal of 344322409 is 904223443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323892009 + 20430400 = 17997^2 + 4520^2 .

It is an emirp because it is prime and its reverse (904223443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344322409 - 2⁹ = 344321897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (344322439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172161204 + 172161205.

It is an arithmetic number, because the mean of its divisors is an integer number (172161205).

Almost surely, 2^344322409 is an apocalyptic number.

It is an amenable number.

344322409 is a deficient number, since it is larger than the sum of its proper divisors (1).

344322409 is an equidigital number, since it uses as much as digits as its factorization.

344322409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 344322409 is about 18555.9265195786. The cubic root of 344322409 is about 700.8984443198.

It can be divided in two parts, 3443 and 22409, that added together give a palindrome (25852).

The spelling of 344322409 in words is "three hundred forty-four million, three hundred twenty-two thousand, four hundred nine".