344509 has 4 divisors (see below), whose sum is σ = 375840. Its totient is φ = 313180.

The previous prime is 344497. The next prime is 344543. The reversal of 344509 is 905443.

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.

It is a cyclic number.

It is not a de Polignac number, because 344509 - 2⁹ = 343997 is a prime.

It is a Duffinian number.

344509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344599) 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, 15649 + ... + 15670.

It is an arithmetic number, because the mean of its divisors is an integer number (93960).

2³⁴⁴⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

344509 is a deficient number, since it is larger than the sum of its proper divisors (31331).

344509 is a wasteful number, since it uses less digits than its factorization.

344509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31330.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 344509 is about 586.9488904496. The cubic root of 344509 is about 70.1025028902.

The spelling of 344509 in words is "three hundred forty-four thousand, five hundred nine".