344391 has 4 divisors (see below), whose sum is σ = 459192. Its totient is φ = 229592.

The previous prime is 344371. The next prime is 344417. The reversal of 344391 is 193443.

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

It is a cyclic number.

It is not a de Polignac number, because 344391 - 2⁶ = 344327 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344321) 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, 57396 + ... + 57401.

It is an arithmetic number, because the mean of its divisors is an integer number (114798).

2³⁴⁴³⁹¹ is an apocalyptic number.

344391 is a deficient number, since it is larger than the sum of its proper divisors (114801).

344391 is a wasteful number, since it uses less digits than its factorization.

344391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114800.

The product of its digits is 1296, while the sum is 24.

The square root of 344391 is about 586.8483620153. The cubic root of 344391 is about 70.0944982227.

It can be divided in two parts, 3443 and 91, that multiplied together give a palindrome (313313).

The spelling of 344391 in words is "three hundred forty-four thousand, three hundred ninety-one".