345449 has 4 divisors (see below), whose sum is σ = 372036. Its totient is φ = 318864.

The previous prime is 345431. The next prime is 345451. The reversal of 345449 is 944543.

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 235225 + 110224 = 485^2 + 332^2 .

It is not a de Polignac number, because 345449 - 2⁸ = 345193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345479) 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, 13274 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (93009).

2³⁴⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

345449 is a deficient number, since it is larger than the sum of its proper divisors (26587).

345449 is a wasteful number, since it uses less digits than its factorization.

345449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26586.

The product of its digits is 8640, while the sum is 29.

The square root of 345449 is about 587.7490961286. The cubic root of 345449 is about 70.1662037033.

The spelling of 345449 in words is "three hundred forty-five thousand, four hundred forty-nine".