338609 has 2 divisors, whose sum is σ = 338610. Its totient is φ = 338608.

The previous prime is 338581. The next prime is 338659. The reversal of 338609 is 906833.

338609 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 2209 = 580^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 338609 - 2¹² = 334513 is a prime.

It is a super-2 number, since 2×338609² = 229312109762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169304 + 169305.

It is an arithmetic number, because the mean of its divisors is an integer number (169305).

2³³⁸⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

338609 is a deficient number, since it is larger than the sum of its proper divisors (1).

338609 is an equidigital number, since it uses as much as digits as its factorization.

338609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 338609 is about 581.9011943621. The cubic root of 338609 is about 69.7000087140.

The spelling of 338609 in words is "three hundred thirty-eight thousand, six hundred nine".