349716823 has 2 divisors, whose sum is σ = 349716824. Its totient is φ = 349716822.

The previous prime is 349716821. The next prime is 349716833. The reversal of 349716823 is 328617943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349716823 - 2¹ = 349716821 is a prime.

Together with 349716821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 349716823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349716821) 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 as a sum of consecutive naturals, namely, 174858411 + 174858412.

It is an arithmetic number, because the mean of its divisors is an integer number (174858412).

Almost surely, 2^349716823 is an apocalyptic number.

349716823 is a deficient number, since it is larger than the sum of its proper divisors (1).

349716823 is an equidigital number, since it uses as much as digits as its factorization.

349716823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 349716823 is about 18700.7171787608. The cubic root of 349716823 is about 704.5397616482.

The spelling of 349716823 in words is "three hundred forty-nine million, seven hundred sixteen thousand, eight hundred twenty-three".