343979 has 4 divisors (see below), whose sum is σ = 349680. Its totient is φ = 338280.

The previous prime is 343963. The next prime is 343997. The reversal of 343979 is 979343.

343979 = 43² + 44² + ... + 103².

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 343979 - 2⁴ = 343963 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343979.

It is not an unprimeable number, because it can be changed into a prime (343939) 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, 2759 + ... + 2880.

It is an arithmetic number, because the mean of its divisors is an integer number (87420).

2³⁴³⁹⁷⁹ is an apocalyptic number.

343979 is a deficient number, since it is larger than the sum of its proper divisors (5701).

343979 is an equidigital number, since it uses as much as digits as its factorization.

343979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its digits is 20412, while the sum is 35.

The square root of 343979 is about 586.4972293200. The cubic root of 343979 is about 70.0665353772.

The spelling of 343979 in words is "three hundred forty-three thousand, nine hundred seventy-nine".