344355749 has 2 divisors, whose sum is σ = 344355750. Its totient is φ = 344355748.

The previous prime is 344355709. The next prime is 344355799. The reversal of 344355749 is 947553443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341140900 + 3214849 = 18470^2 + 1793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344355749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344355709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172177874 + 172177875.

It is an arithmetic number, because the mean of its divisors is an integer number (172177875).

Almost surely, 2^344355749 is an apocalyptic number.

It is an amenable number.

344355749 is a deficient number, since it is larger than the sum of its proper divisors (1).

344355749 is an equidigital number, since it uses as much as digits as its factorization.

344355749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 44.

The square root of 344355749 is about 18556.8248631063. The cubic root of 344355749 is about 700.9210657538.

The spelling of 344355749 in words is "three hundred forty-four million, three hundred fifty-five thousand, seven hundred forty-nine".