349818 has 16 divisors (see below), whose sum is σ = 799680. Its totient is φ = 99936.

The previous prime is 349813. The next prime is 349819. The reversal of 349818 is 818943.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (349813) 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 7 ways as a sum of consecutive naturals, for example, 4123 + ... + 4206.

It is an arithmetic number, because the mean of its divisors is an integer number (49980).

2³⁴⁹⁸¹⁸ is an apocalyptic number.

349818 is an abundant number, since it is smaller than the sum of its proper divisors (449862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349818 is a wasteful number, since it uses less digits than its factorization.

349818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341.

The product of its digits is 6912, while the sum is 33.

The square root of 349818 is about 591.4541402341. The cubic root of 349818 is about 70.4607698849.

The spelling of 349818 in words is "three hundred forty-nine thousand, eight hundred eighteen".