349089197 has 2 divisors, whose sum is σ = 349089198. Its totient is φ = 349089196.

The previous prime is 349089173. The next prime is 349089259. The reversal of 349089197 is 791980943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337603876 + 11485321 = 18374^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 349089197 - 2⁶ = 349089133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349089107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174544598 + 174544599.

It is an arithmetic number, because the mean of its divisors is an integer number (174544599).

Almost surely, 2^349089197 is an apocalyptic number.

It is an amenable number.

349089197 is a deficient number, since it is larger than the sum of its proper divisors (1).

349089197 is an equidigital number, since it uses as much as digits as its factorization.

349089197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 349089197 is about 18683.9288427247. The cubic root of 349089197 is about 704.1180373328.

The spelling of 349089197 in words is "three hundred forty-nine million, eighty-nine thousand, one hundred ninety-seven".