343685869 has 2 divisors, whose sum is σ = 343685870. Its totient is φ = 343685868.

The previous prime is 343685863. The next prime is 343685879. The reversal of 343685869 is 968586343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299636100 + 44049769 = 17310^2 + 6637^2 .

It is an emirp because it is prime and its reverse (968586343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343685869 is a prime.

It is a super-2 number, since 2×343685869² = 236239953100570322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343685863) 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, 171842934 + 171842935.

It is an arithmetic number, because the mean of its divisors is an integer number (171842935).

Almost surely, 2^343685869 is an apocalyptic number.

It is an amenable number.

343685869 is a deficient number, since it is larger than the sum of its proper divisors (1).

343685869 is an equidigital number, since it uses as much as digits as its factorization.

343685869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 52.

The square root of 343685869 is about 18538.7666526120. The cubic root of 343685869 is about 700.4662669037.

The spelling of 343685869 in words is "three hundred forty-three million, six hundred eighty-five thousand, eight hundred sixty-nine".