349778 has 16 divisors (see below), whose sum is σ = 616896. Its totient is φ = 146640.

The previous prime is 349759. The next prime is 349787. The reversal of 349778 is 877943.

It is a Curzon number.

It is an unprimeable number.

349778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (38556).

2³⁴⁹⁷⁷⁸ is an apocalyptic number.

349778 is a deficient number, since it is larger than the sum of its proper divisors (267118).

349778 is a wasteful number, since it uses less digits than its factorization.

349778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249.

The product of its digits is 42336, while the sum is 38.

The square root of 349778 is about 591.4203243041. The cubic root of 349778 is about 70.4580841662.

The spelling of 349778 in words is "three hundred forty-nine thousand, seven hundred seventy-eight".