349117217 has 2 divisors, whose sum is σ = 349117218. Its totient is φ = 349117216.

The previous prime is 349117211. The next prime is 349117231. The reversal of 349117217 is 712711943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228644641 + 120472576 = 15121^2 + 10976^2 .

It is a cyclic number.

It is not a de Polignac number, because 349117217 - 2⁸ = 349116961 is a prime.

It is not a weakly prime, because it can be changed into another prime (349117211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174558608 + 174558609.

It is an arithmetic number, because the mean of its divisors is an integer number (174558609).

Almost surely, 2^349117217 is an apocalyptic number.

It is an amenable number.

349117217 is a deficient number, since it is larger than the sum of its proper divisors (1).

349117217 is an equidigital number, since it uses as much as digits as its factorization.

349117217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 349117217 is about 18684.6786699691. The cubic root of 349117217 is about 704.1368757460.

The spelling of 349117217 in words is "three hundred forty-nine million, one hundred seventeen thousand, two hundred seventeen".