338449609 has 3 divisors (see below), whose sum is σ = 338468007. Its totient is φ = 338431212.

The previous prime is 338449597. The next prime is 338449621. The reversal of 338449609 is 906944833.

The square root of 338449609 is 18397.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 906944833 = 131 ⋅6923243.

It is an interprime number because it is at equal distance from previous prime (338449597) and next prime (338449621).

It can be written as a sum of positive squares in only one way, i.e., 306775225 + 31674384 = 17515^2 + 5628^2 .

It is not a de Polignac number, because 338449609 - 2¹¹ = 338447561 is a prime.

It is a super-2 number, since 2×338449609² = 229096275664505762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338449649) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9199 + ... + 27595.

It is an arithmetic number, because the mean of its divisors is an integer number (112822669).

Almost surely, 2^338449609 is an apocalyptic number.

338449609 is the 18397-th square number.

338449609 is the 9199-th centered octagonal number.

It is an amenable number.

338449609 is a deficient number, since it is larger than the sum of its proper divisors (18398).

338449609 is an frugal number, since it uses more digits than its factorization.

338449609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36794 (or 18397 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The cubic root of 338449609 is about 696.8907053483.

The spelling of 338449609 in words is "three hundred thirty-eight million, four hundred forty-nine thousand, six hundred nine".