338729 has 4 divisors (see below), whose sum is σ = 345984. Its totient is φ = 331476.

The previous prime is 338717. The next prime is 338731. The reversal of 338729 is 927833.

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.

It is a cyclic number.

It is not a de Polignac number, because 338729 - 2⁸ = 338473 is a prime.

It is a super-2 number, since 2×338729² = 229474670882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 338695 and 338704.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 338729.

It is not an unprimeable number, because it can be changed into a prime (332729) 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, 3557 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (86496).

2³³⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

338729 is a deficient number, since it is larger than the sum of its proper divisors (7255).

338729 is an equidigital number, since it uses as much as digits as its factorization.

338729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7254.

The product of its digits is 9072, while the sum is 32.

The square root of 338729 is about 582.0042955168. The cubic root of 338729 is about 69.7082414280.

The spelling of 338729 in words is "three hundred thirty-eight thousand, seven hundred twenty-nine".