344453621 has 2 divisors, whose sum is σ = 344453622. Its totient is φ = 344453620.

The previous prime is 344453611. The next prime is 344453671. The reversal of 344453621 is 126354443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243672100 + 100781521 = 15610^2 + 10039^2 .

It is a cyclic number.

It is not a de Polignac number, because 344453621 - 2¹⁰ = 344452597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344453611) 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, 172226810 + 172226811.

It is an arithmetic number, because the mean of its divisors is an integer number (172226811).

Almost surely, 2^344453621 is an apocalyptic number.

It is an amenable number.

344453621 is a deficient number, since it is larger than the sum of its proper divisors (1).

344453621 is an equidigital number, since it uses as much as digits as its factorization.

344453621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 32.

The square root of 344453621 is about 18559.4617648250. The cubic root of 344453621 is about 700.9874641888.

The spelling of 344453621 in words is "three hundred forty-four million, four hundred fifty-three thousand, six hundred twenty-one".