343980443 has 4 divisors (see below), whose sum is σ = 349810680. Its totient is φ = 338150208.

The previous prime is 343980437. The next prime is 343980467. The reversal of 343980443 is 344089343.

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 343980443 - 2¹⁴ = 343964059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343980397 and 343980406.

It is not an unprimeable number, because it can be changed into a prime (343980473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2915030 + ... + 2915147.

It is an arithmetic number, because the mean of its divisors is an integer number (87452670).

Almost surely, 2^343980443 is an apocalyptic number.

343980443 is a deficient number, since it is larger than the sum of its proper divisors (5830237).

343980443 is an equidigital number, since it uses as much as digits as its factorization.

343980443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830236.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 343980443 is about 18546.7097621114. The cubic root of 343980443 is about 700.6663335397. Note that the first 3 decimals are identical.

Subtracting 343980443 from its reverse (344089343), we obtain a square (108900 = 330²).

The spelling of 343980443 in words is "three hundred forty-three million, nine hundred eighty thousand, four hundred forty-three".