344921 has 2 divisors, whose sum is σ = 344922. Its totient is φ = 344920.

The previous prime is 344917. The next prime is 344941. The reversal of 344921 is 129443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 151321 = 440^2 + 389^2 .

It is an emirp because it is prime and its reverse (129443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344921 - 2² = 344917 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 344921.

It is not a weakly prime, because it can be changed into another prime (344941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172460 + 172461.

It is an arithmetic number, because the mean of its divisors is an integer number (172461).

2³⁴⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

344921 is a deficient number, since it is larger than the sum of its proper divisors (1).

344921 is an equidigital number, since it uses as much as digits as its factorization.

344921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 344921 is about 587.2997531074. The cubic root of 344921 is about 70.1304370665.

The spelling of 344921 in words is "three hundred forty-four thousand, nine hundred twenty-one".