349447339 has 2 divisors, whose sum is σ = 349447340. Its totient is φ = 349447338.

The previous prime is 349447313. The next prime is 349447381. The reversal of 349447339 is 933744943.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349447339 is a prime.

It is a super-2 number, since 2×349447339² = 244226885468361842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (349447139) 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, 174723669 + 174723670.

It is an arithmetic number, because the mean of its divisors is an integer number (174723670).

Almost surely, 2^349447339 is an apocalyptic number.

349447339 is a deficient number, since it is larger than the sum of its proper divisors (1).

349447339 is an equidigital number, since it uses as much as digits as its factorization.

349447339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 46.

The square root of 349447339 is about 18693.5106119744. The cubic root of 349447339 is about 704.3587475921.

The spelling of 349447339 in words is "three hundred forty-nine million, four hundred forty-seven thousand, three hundred thirty-nine".