343764389 has 2 divisors, whose sum is σ = 343764390. Its totient is φ = 343764388.

The previous prime is 343764349. The next prime is 343764391. The reversal of 343764389 is 983467343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308599489 + 35164900 = 17567^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 343764389 - 2²⁴ = 326987173 is a prime.

Together with 343764391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343764319) 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, 171882194 + 171882195.

It is an arithmetic number, because the mean of its divisors is an integer number (171882195).

Almost surely, 2^343764389 is an apocalyptic number.

It is an amenable number.

343764389 is a deficient number, since it is larger than the sum of its proper divisors (1).

343764389 is an equidigital number, since it uses as much as digits as its factorization.

343764389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 47.

The square root of 343764389 is about 18540.8842561513. The cubic root of 343764389 is about 700.5196067199.

The spelling of 343764389 in words is "three hundred forty-three million, seven hundred sixty-four thousand, three hundred eighty-nine".