349858 has 4 divisors (see below), whose sum is σ = 524790. Its totient is φ = 174928.

The previous prime is 349849. The next prime is 349871. The reversal of 349858 is 858943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 218089 + 131769 = 467^2 + 363^2 .

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

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87463 + ... + 87466.

2³⁴⁹⁸⁵⁸ is an apocalyptic number.

349858 is a deficient number, since it is larger than the sum of its proper divisors (174932).

349858 is a wasteful number, since it uses less digits than its factorization.

349858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174931.

The product of its digits is 34560, while the sum is 37.

The square root of 349858 is about 591.4879542307. The cubic root of 349858 is about 70.4634553989.

The spelling of 349858 in words is "three hundred forty-nine thousand, eight hundred fifty-eight".