349326839 has 2 divisors, whose sum is σ = 349326840. Its totient is φ = 349326838.

The previous prime is 349326743. The next prime is 349326841. The reversal of 349326839 is 938623943.

It is a strong prime.

It is an emirp because it is prime and its reverse (938623943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349326839 - 2²⁰ = 348278263 is a prime.

Together with 349326841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 349326793 and 349326802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349328839) 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, 174663419 + 174663420.

It is an arithmetic number, because the mean of its divisors is an integer number (174663420).

Almost surely, 2^349326839 is an apocalyptic number.

349326839 is a deficient number, since it is larger than the sum of its proper divisors (1).

349326839 is an equidigital number, since it uses as much as digits as its factorization.

349326839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 47.

The square root of 349326839 is about 18690.2872904619. The cubic root of 349326839 is about 704.2777768922.

The spelling of 349326839 in words is "three hundred forty-nine million, three hundred twenty-six thousand, eight hundred thirty-nine".