344223409 has 2 divisors, whose sum is σ = 344223410. Its totient is φ = 344223408.

The previous prime is 344223403. The next prime is 344223511. The reversal of 344223409 is 904322443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241647025 + 102576384 = 15545^2 + 10128^2 .

It is a cyclic number.

It is not a de Polignac number, because 344223409 - 2³ = 344223401 is a prime.

It is not a weakly prime, because it can be changed into another prime (344223401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172111704 + 172111705.

It is an arithmetic number, because the mean of its divisors is an integer number (172111705).

Almost surely, 2^344223409 is an apocalyptic number.

It is an amenable number.

344223409 is a deficient number, since it is larger than the sum of its proper divisors (1).

344223409 is an equidigital number, since it uses as much as digits as its factorization.

344223409 is an odious number, because the sum of its binary digits is odd.

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

The square root of 344223409 is about 18553.2587164627. The cubic root of 344223409 is about 700.8312634882.

The spelling of 344223409 in words is "three hundred forty-four million, two hundred twenty-three thousand, four hundred nine".