344991 has 4 divisors (see below), whose sum is σ = 459992. Its totient is φ = 229992.

The previous prime is 344987. The next prime is 345001. The reversal of 344991 is 199443.

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

It is not a de Polignac number, because 344991 - 2² = 344987 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57496 + ... + 57501.

It is an arithmetic number, because the mean of its divisors is an integer number (114998).

2³⁴⁴⁹⁹¹ is an apocalyptic number.

344991 is a deficient number, since it is larger than the sum of its proper divisors (115001).

344991 is a wasteful number, since it uses less digits than its factorization.

344991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115000.

The product of its digits is 3888, while the sum is 30.

The square root of 344991 is about 587.3593448648. The cubic root of 344991 is about 70.1351809533.

The spelling of 344991 in words is "three hundred forty-four thousand, nine hundred ninety-one".