349870 has 16 divisors (see below), whose sum is σ = 641520. Its totient is φ = 137344.

The previous prime is 349849. The next prime is 349871. The reversal of 349870 is 78943.

It is a happy number.

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

It is a plaindrome in base 16.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349870.

It is not an unprimeable number, because it can be changed into a prime (349871) 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, 294 + ... + 886.

It is an arithmetic number, because the mean of its divisors is an integer number (40095).

2³⁴⁹⁸⁷⁰ is an apocalyptic number.

349870 is a deficient number, since it is larger than the sum of its proper divisors (291650).

349870 is a wasteful number, since it uses less digits than its factorization.

349870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 349870 is about 591.4980980527. The cubic root of 349870 is about 70.4642610132.

The spelling of 349870 in words is "three hundred forty-nine thousand, eight hundred seventy".