345349 has 4 divisors (see below), whose sum is σ = 346860. Its totient is φ = 343840.

The previous prime is 345329. The next prime is 345379. The reversal of 345349 is 943543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 302500 + 42849 = 550^2 + 207^2 .

It is a cyclic number.

It is not a de Polignac number, because 345349 - 2⁷ = 345221 is a prime.

It is a Duffinian number.

345349 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334 + ... + 895.

It is an arithmetic number, because the mean of its divisors is an integer number (86715).

2³⁴⁵³⁴⁹ is an apocalyptic number.

It is an amenable number.

345349 is a deficient number, since it is larger than the sum of its proper divisors (1511).

345349 is a wasteful number, since it uses less digits than its factorization.

345349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510.

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

The square root of 345349 is about 587.6640196575. The cubic root of 345349 is about 70.1594325180.

It can be divided in two parts, 34534 and 9, that added together give a palindrome (34543).

The spelling of 345349 in words is "three hundred forty-five thousand, three hundred forty-nine".