343749 has 8 divisors (see below), whose sum is σ = 523840. Its totient is φ = 196416.

The previous prime is 343727. The next prime is 343769. The reversal of 343749 is 947343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343749 - 2⁹ = 343237 is a prime.

It is a Duffinian number.

It is a Curzon number.

343749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8164 + ... + 8205.

It is an arithmetic number, because the mean of its divisors is an integer number (65480).

2³⁴³⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

343749 is a deficient number, since it is larger than the sum of its proper divisors (180091).

343749 is a wasteful number, since it uses less digits than its factorization.

343749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16379.

The product of its digits is 9072, while the sum is 30.

The square root of 343749 is about 586.3011171744. The cubic root of 343749 is about 70.0509153381.

It can be divided in two parts, 3437 and 49, that added together give a triangular number (3486 = T₈₃).

The spelling of 343749 in words is "three hundred forty-three thousand, seven hundred forty-nine".