344209993 has 2 divisors, whose sum is σ = 344209994. Its totient is φ = 344209992.

The previous prime is 344209991. The next prime is 344210017. The reversal of 344209993 is 399902443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336098889 + 8111104 = 18333^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 344209993 - 2¹ = 344209991 is a prime.

Together with 344209991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (344209991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172104996 + 172104997.

It is an arithmetic number, because the mean of its divisors is an integer number (172104997).

Almost surely, 2^344209993 is an apocalyptic number.

It is an amenable number.

344209993 is a deficient number, since it is larger than the sum of its proper divisors (1).

344209993 is an equidigital number, since it uses as much as digits as its factorization.

344209993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 344209993 is about 18552.8971592040. The cubic root of 344209993 is about 700.8221584767.

The spelling of 344209993 in words is "three hundred forty-four million, two hundred nine thousand, nine hundred ninety-three".