347399 has 4 divisors (see below), whose sum is σ = 374136. Its totient is φ = 320664.

The previous prime is 347359. The next prime is 347401. The reversal of 347399 is 993743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993743 = 29 ⋅34267.

It is a cyclic number.

It is not a de Polignac number, because 347399 - 2⁸ = 347143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 347399.

It is not an unprimeable number, because it can be changed into a prime (347329) 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, 13349 + ... + 13374.

It is an arithmetic number, because the mean of its divisors is an integer number (93534).

2³⁴⁷³⁹⁹ is an apocalyptic number.

347399 is a deficient number, since it is larger than the sum of its proper divisors (26737).

347399 is a wasteful number, since it uses less digits than its factorization.

347399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26736.

The product of its digits is 20412, while the sum is 35.

The square root of 347399 is about 589.4056328200. The cubic root of 347399 is about 70.2979814303.

The spelling of 347399 in words is "three hundred forty-seven thousand, three hundred ninety-nine".