344405 has 4 divisors (see below), whose sum is σ = 413292. Its totient is φ = 275520.

The previous prime is 344371. The next prime is 344417. The reversal of 344405 is 504443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504443 = 67 ⋅7529.

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 303601 = 202^2 + 551^2 .

It is not a de Polignac number, because 344405 - 2¹⁰ = 343381 is a prime.

It is a super-2 number, since 2×344405² = 237229608050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34436 + ... + 34445.

It is an arithmetic number, because the mean of its divisors is an integer number (103323).

2³⁴⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

344405 is a deficient number, since it is larger than the sum of its proper divisors (68887).

344405 is an equidigital number, since it uses as much as digits as its factorization.

344405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68886.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 344405 is about 586.8602900180. The cubic root of 344405 is about 70.0954480246.

Adding to 344405 its reverse (504443), we get a palindrome (848848).

The spelling of 344405 in words is "three hundred forty-four thousand, four hundred five".