343549 has 4 divisors (see below), whose sum is σ = 344736. Its totient is φ = 342364.

The previous prime is 343547. The next prime is 343559. The reversal of 343549 is 945343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 945343 = 7 ⋅135049.

It is a cyclic number.

It is not a de Polignac number, because 343549 - 2¹ = 343547 is a prime.

It is a Duffinian number.

343549 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2³⁴³⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

343549 is a deficient number, since it is larger than the sum of its proper divisors (1187).

343549 is an equidigital number, since it uses as much as digits as its factorization.

343549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its digits is 6480, while the sum is 28.

The square root of 343549 is about 586.1305315371. The cubic root of 343549 is about 70.0373270308.

The spelling of 343549 in words is "three hundred forty-three thousand, five hundred forty-nine".