349890193 has 2 divisors, whose sum is σ = 349890194. Its totient is φ = 349890192.

The previous prime is 349890181. The next prime is 349890223. The reversal of 349890193 is 391098943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323388289 + 26501904 = 17983^2 + 5148^2 .

It is a cyclic number.

It is not a de Polignac number, because 349890193 - 2⁵ = 349890161 is a prime.

It is not a weakly prime, because it can be changed into another prime (349890143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174945096 + 174945097.

It is an arithmetic number, because the mean of its divisors is an integer number (174945097).

Almost surely, 2^349890193 is an apocalyptic number.

It is an amenable number.

349890193 is a deficient number, since it is larger than the sum of its proper divisors (1).

349890193 is an equidigital number, since it uses as much as digits as its factorization.

349890193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 349890193 is about 18705.3519881343. The cubic root of 349890193 is about 704.6561661900.

The spelling of 349890193 in words is "three hundred forty-nine million, eight hundred ninety thousand, one hundred ninety-three".