348809 has 4 divisors (see below), whose sum is σ = 351300. Its totient is φ = 346320.

The previous prime is 348779. The next prime is 348811. The reversal of 348809 is 908843.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908843 = 13 ⋅69911.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 222784 = 355^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 348809 - 2⁸ = 348553 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 348809.

It is not an unprimeable number, because it can be changed into a prime (348839) 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, 1022 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (87825).

2³⁴⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

348809 is a deficient number, since it is larger than the sum of its proper divisors (2491).

348809 is a wasteful number, since it uses less digits than its factorization.

348809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 348809 is about 590.6005418216. The cubic root of 348809 is about 70.3929599753.

The spelling of 348809 in words is "three hundred forty-eight thousand, eight hundred nine".