349643 has 8 divisors (see below), whose sum is σ = 403200. Its totient is φ = 297000.

The previous prime is 349637. The next prime is 349663. The reversal of 349643 is 346943.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349643 - 2⁶ = 349579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349603) 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, 1268 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2³⁴⁹⁶⁴³ is an apocalyptic number.

349643 is a deficient number, since it is larger than the sum of its proper divisors (53557).

349643 is a wasteful number, since it uses less digits than its factorization.

349643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 7776, while the sum is 29.

The square root of 349643 is about 591.3061812631. The cubic root of 349643 is about 70.4490183537.

The spelling of 349643 in words is "three hundred forty-nine thousand, six hundred forty-three".