349823 has 4 divisors (see below), whose sum is σ = 351168. Its totient is φ = 348480.

The previous prime is 349819. The next prime is 349829. The reversal of 349823 is 328943.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 349823 - 2² = 349819 is a prime.

It is a super-2 number, since 2×349823² = 244752262658, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁵ + 4⁹ + 8³ + 9⁵ + 2¹³ + 3⁹ .

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (87792).

2³⁴⁹⁸²³ is an apocalyptic number.

349823 is a deficient number, since it is larger than the sum of its proper divisors (1345).

349823 is an equidigital number, since it uses as much as digits as its factorization.

349823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its digits is 5184, while the sum is 29.

The square root of 349823 is about 591.4583670893. The cubic root of 349823 is about 70.4611055854.

The spelling of 349823 in words is "three hundred forty-nine thousand, eight hundred twenty-three".