349712 has 20 divisors (see below), whose sum is σ = 739536. Its totient is φ = 158880.

The previous prime is 349709. The next prime is 349717. The reversal of 349712 is 217943.

349712 is nontrivially palindromic in base 13.

It is not an unprimeable number, because it can be changed into a prime (349717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818 + ... + 1169.

2³⁴⁹⁷¹² is an apocalyptic number.

It is an amenable number.

349712 is an abundant number, since it is smaller than the sum of its proper divisors (389824).

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

349712 is a wasteful number, since it uses less digits than its factorization.

349712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 2000 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 349712 is about 591.3645237922. The cubic root of 349712 is about 70.4536522827.

Subtracting from 349712 its reverse (217943), we obtain a square (131769 = 363²).

The spelling of 349712 in words is "three hundred forty-nine thousand, seven hundred twelve".