343868849 has 2 divisors, whose sum is σ = 343868850. Its totient is φ = 343868848.

The previous prime is 343868803. The next prime is 343868851. The reversal of 343868849 is 948868343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343546225 + 322624 = 18535^2 + 568^2 .

It is an emirp because it is prime and its reverse (948868343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343868849 is a prime.

Together with 343868851, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343868849.

It is not a weakly prime, because it can be changed into another prime (343868869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171934424 + 171934425.

It is an arithmetic number, because the mean of its divisors is an integer number (171934425).

Almost surely, 2^343868849 is an apocalyptic number.

It is an amenable number.

343868849 is a deficient number, since it is larger than the sum of its proper divisors (1).

343868849 is an equidigital number, since it uses as much as digits as its factorization.

343868849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 53.

The square root of 343868849 is about 18543.7010599287. The cubic root of 343868849 is about 700.5905553790.

The spelling of 343868849 in words is "three hundred forty-three million, eight hundred sixty-eight thousand, eight hundred forty-nine".