349718549 has 2 divisors, whose sum is σ = 349718550. Its totient is φ = 349718548.

The previous prime is 349718531. The next prime is 349718563. The reversal of 349718549 is 945817943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298667524 + 51051025 = 17282^2 + 7145^2 .

It is a cyclic number.

It is not a de Polignac number, because 349718549 - 2¹⁶ = 349653013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349718497 and 349718506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349715549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174859274 + 174859275.

It is an arithmetic number, because the mean of its divisors is an integer number (174859275).

Almost surely, 2^349718549 is an apocalyptic number.

It is an amenable number.

349718549 is a deficient number, since it is larger than the sum of its proper divisors (1).

349718549 is an equidigital number, since it uses as much as digits as its factorization.

349718549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 349718549 is about 18700.7633266666. The cubic root of 349718549 is about 704.5409207132.

The spelling of 349718549 in words is "three hundred forty-nine million, seven hundred eighteen thousand, five hundred forty-nine".