344803993 has 2 divisors, whose sum is σ = 344803994. Its totient is φ = 344803992.

The previous prime is 344803913. The next prime is 344804003. The reversal of 344803993 is 399308443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344584969 + 219024 = 18563^2 + 468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344803993 is a prime.

It is not a weakly prime, because it can be changed into another prime (344803913) 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, 172401996 + 172401997.

It is an arithmetic number, because the mean of its divisors is an integer number (172401997).

Almost surely, 2^344803993 is an apocalyptic number.

It is an amenable number.

344803993 is a deficient number, since it is larger than the sum of its proper divisors (1).

344803993 is an equidigital number, since it uses as much as digits as its factorization.

344803993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 344803993 is about 18568.8985403012. The cubic root of 344803993 is about 701.2250609086.

The spelling of 344803993 in words is "three hundred forty-four million, eight hundred three thousand, nine hundred ninety-three".