343356779 has 4 divisors (see below), whose sum is σ = 343401360. Its totient is φ = 343312200.

The previous prime is 343356773. The next prime is 343356787. The reversal of 343356779 is 977653343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 343356779 - 2²⁰ = 342308203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343356773) 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 in 3 ways as a sum of consecutive naturals, for example, 7439 + ... + 27240.

It is an arithmetic number, because the mean of its divisors is an integer number (85850340).

Almost surely, 2^343356779 is an apocalyptic number.

343356779 is a deficient number, since it is larger than the sum of its proper divisors (44581).

343356779 is an equidigital number, since it uses as much as digits as its factorization.

343356779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44580.

The product of its digits is 1428840, while the sum is 47.

The square root of 343356779 is about 18529.8888016091. Note that the first 4 decimals coincide. The cubic root of 343356779 is about 700.2426226990.

It can be divided in two parts, 34335 and 6779, that added together give a palindrome (41114).

The spelling of 343356779 in words is "three hundred forty-three million, three hundred fifty-six thousand, seven hundred seventy-nine".