344221369 has 2 divisors, whose sum is σ = 344221370. Its totient is φ = 344221368.

The previous prime is 344221357. The next prime is 344221393. The reversal of 344221369 is 963122443.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201299344 + 142922025 = 14188^2 + 11955^2 .

It is a cyclic number.

It is not a de Polignac number, because 344221369 - 2⁵ = 344221337 is a prime.

It is a super-2 number, since 2×344221369² = 236976701752468322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (344224369) 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, 172110684 + 172110685.

It is an arithmetic number, because the mean of its divisors is an integer number (172110685).

Almost surely, 2^344221369 is an apocalyptic number.

It is an amenable number.

344221369 is a deficient number, since it is larger than the sum of its proper divisors (1).

344221369 is an equidigital number, since it uses as much as digits as its factorization.

344221369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 34.

The square root of 344221369 is about 18553.2037395163. The cubic root of 344221369 is about 700.8298790205.

The spelling of 344221369 in words is "three hundred forty-four million, two hundred twenty-one thousand, three hundred sixty-nine".