343449427 has 2 divisors, whose sum is σ = 343449428. Its totient is φ = 343449426.

The previous prime is 343449397. The next prime is 343449433. The reversal of 343449427 is 724944343.

It is a strong prime.

It is an emirp because it is prime and its reverse (724944343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343449427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343449427.

It is not a weakly prime, because it can be changed into another prime (343449467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171724713 + 171724714.

It is an arithmetic number, because the mean of its divisors is an integer number (171724714).

Almost surely, 2^343449427 is an apocalyptic number.

343449427 is a deficient number, since it is larger than the sum of its proper divisors (1).

343449427 is an equidigital number, since it uses as much as digits as its factorization.

343449427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 40.

The square root of 343449427 is about 18532.3885940264. The cubic root of 343449427 is about 700.3055992181.

The spelling of 343449427 in words is "three hundred forty-three million, four hundred forty-nine thousand, four hundred twenty-seven".