344090309 has 2 divisors, whose sum is σ = 344090310. Its totient is φ = 344090308.

The previous prime is 344090293. The next prime is 344090321. The reversal of 344090309 is 903090443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304677025 + 39413284 = 17455^2 + 6278^2 .

It is an emirp because it is prime and its reverse (903090443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344090309 - 2⁴ = 344090293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344090389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172045154 + 172045155.

It is an arithmetic number, because the mean of its divisors is an integer number (172045155).

Almost surely, 2^344090309 is an apocalyptic number.

It is an amenable number.

344090309 is a deficient number, since it is larger than the sum of its proper divisors (1).

344090309 is an equidigital number, since it uses as much as digits as its factorization.

344090309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 344090309 is about 18549.6713987068. The cubic root of 344090309 is about 700.7409222891.

The spelling of 344090309 in words is "three hundred forty-four million, ninety thousand, three hundred nine".