349391 has 16 divisors (see below), whose sum is σ = 437760. Its totient is φ = 272160.

The previous prime is 349387. The next prime is 349397. The reversal of 349391 is 193943.

It is not a de Polignac number, because 349391 - 2² = 349387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349397) 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 15 ways as a sum of consecutive naturals, for example, 4886 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (27360).

2³⁴⁹³⁹¹ is an apocalyptic number.

349391 is a deficient number, since it is larger than the sum of its proper divisors (88369).

349391 is a wasteful number, since it uses less digits than its factorization.

349391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134.

The product of its digits is 2916, while the sum is 29.

The square root of 349391 is about 591.0930552798. The cubic root of 349391 is about 70.4320892579.

It can be divided in two parts, 3 and 49391, that added together give a palindrome (49394).

The spelling of 349391 in words is "three hundred forty-nine thousand, three hundred ninety-one".