349985 has 4 divisors (see below), whose sum is σ = 419988. Its totient is φ = 279984.

The previous prime is 349981. The next prime is 350003. The reversal of 349985 is 589943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589943 = 53 ⋅11131.

It can be written as a sum of positive squares in 2 ways, for example, as 215296 + 134689 = 464^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 349985 - 2² = 349981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34994 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (104997).

2³⁴⁹⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

349985 is a deficient number, since it is larger than the sum of its proper divisors (70003).

349985 is an equidigital number, since it uses as much as digits as its factorization.

349985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70002.

The product of its digits is 38880, while the sum is 38.

The square root of 349985 is about 591.5953008603. The cubic root of 349985 is about 70.4719805493.

The spelling of 349985 in words is "three hundred forty-nine thousand, nine hundred eighty-five".