349343839697 has 2 divisors, whose sum is σ = 349343839698. Its totient is φ = 349343839696.

The previous prime is 349343839673. The next prime is 349343839703. The reversal of 349343839697 is 796938343943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313825160401 + 35518679296 = 560201^2 + 188464^2 .

It is a cyclic number.

It is not a de Polignac number, because 349343839697 - 2⁶ = 349343839633 is a prime.

It is a super-2 number, since 2×349343839697² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (349343839667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174671919848 + 174671919849.

It is an arithmetic number, because the mean of its divisors is an integer number (174671919849).

Almost surely, 2^349343839697 is an apocalyptic number.

It is an amenable number.

349343839697 is a deficient number, since it is larger than the sum of its proper divisors (1).

349343839697 is an equidigital number, since it uses as much as digits as its factorization.

349343839697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317447424, while the sum is 68.

The spelling of 349343839697 in words is "three hundred forty-nine billion, three hundred forty-three million, eight hundred thirty-nine thousand, six hundred ninety-seven".