349180397 has 2 divisors, whose sum is σ = 349180398. Its totient is φ = 349180396.

The previous prime is 349180379. The next prime is 349180421. The reversal of 349180397 is 793081943.

It is a happy number.

Together with previous prime (349180379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285914281 + 63266116 = 16909^2 + 7954^2 .

It is a cyclic number.

It is not a de Polignac number, because 349180397 - 2¹⁸ = 348918253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349180327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174590198 + 174590199.

It is an arithmetic number, because the mean of its divisors is an integer number (174590199).

Almost surely, 2^349180397 is an apocalyptic number.

It is an amenable number.

349180397 is a deficient number, since it is larger than the sum of its proper divisors (1).

349180397 is an equidigital number, since it uses as much as digits as its factorization.

349180397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 349180397 is about 18686.3692835179. The cubic root of 349180397 is about 704.1793492404.

The spelling of 349180397 in words is "three hundred forty-nine million, one hundred eighty thousand, three hundred ninety-seven".