344340991 has 2 divisors, whose sum is σ = 344340992. Its totient is φ = 344340990.

The previous prime is 344340961. The next prime is 344341031. The reversal of 344340991 is 199043443.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 344340991 - 2⁵ = 344340959 is a prime.

It is a Chen prime.

It is equal to p_18515890 and since 344340991 and 18515890 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344340991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344340961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172170495 + 172170496.

It is an arithmetic number, because the mean of its divisors is an integer number (172170496).

Almost surely, 2^344340991 is an apocalyptic number.

344340991 is a deficient number, since it is larger than the sum of its proper divisors (1).

344340991 is an equidigital number, since it uses as much as digits as its factorization.

344340991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 344340991 is about 18556.4272153882. The cubic root of 344340991 is about 700.9110525230.

The spelling of 344340991 in words is "three hundred forty-four million, three hundred forty thousand, nine hundred ninety-one".