349716709 has 2 divisors, whose sum is σ = 349716710. Its totient is φ = 349716708.

The previous prime is 349716667. The next prime is 349716727. The reversal of 349716709 is 907617943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340291809 + 9424900 = 18447^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 349716709 - 2²¹ = 347619557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349716739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174858354 + 174858355.

It is an arithmetic number, because the mean of its divisors is an integer number (174858355).

Almost surely, 2^349716709 is an apocalyptic number.

It is an amenable number.

349716709 is a deficient number, since it is larger than the sum of its proper divisors (1).

349716709 is an equidigital number, since it uses as much as digits as its factorization.

349716709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 349716709 is about 18700.7141307491. The cubic root of 349716709 is about 704.5396850934.

The spelling of 349716709 in words is "three hundred forty-nine million, seven hundred sixteen thousand, seven hundred nine".