349289 has 4 divisors (see below), whose sum is σ = 357456. Its totient is φ = 341124.

The previous prime is 349241. The next prime is 349291. The reversal of 349289 is 982943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982943 = 13 ⋅75611.

It is a cyclic number.

It is not a de Polignac number, because 349289 - 2¹² = 345193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349589) 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, 4019 + ... + 4104.

It is an arithmetic number, because the mean of its divisors is an integer number (89364).

2³⁴⁹²⁸⁹ is an apocalyptic number.

It is an amenable number.

349289 is a deficient number, since it is larger than the sum of its proper divisors (8167).

349289 is an equidigital number, since it uses as much as digits as its factorization.

349289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166.

The product of its digits is 15552, while the sum is 35.

The square root of 349289 is about 591.0067681508. The cubic root of 349289 is about 70.4252346907.

The spelling of 349289 in words is "three hundred forty-nine thousand, two hundred eighty-nine".