349873 has 4 divisors (see below), whose sum is σ = 351988. Its totient is φ = 347760.

The previous prime is 349871. The next prime is 349903. The reversal of 349873 is 378943.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91809 + 258064 = 303^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 349873 - 2¹ = 349871 is a prime.

It is a super-3 number, since 3×349873³ = 128485033300204851, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is the 592-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349871) by changing a digit.

It is a nontrivial repunit in base 591.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (87997).

2³⁴⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

349873 is a deficient number, since it is larger than the sum of its proper divisors (2115).

349873 is a wasteful number, since it uses less digits than its factorization.

349873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114.

The product of its digits is 18144, while the sum is 34.

The square root of 349873 is about 591.5006339811. The cubic root of 349873 is about 70.4644624138.

The spelling of 349873 in words is "three hundred forty-nine thousand, eight hundred seventy-three".