338670409 has 27 divisors (see below), whose sum is σ = 434853741. Its totient is φ = 262794840.

The previous prime is 338670389. The next prime is 338670457. The reversal of 338670409 is 904076833.

The square root of 338670409 is 18403.

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

It is not a de Polignac number, because 338670409 - 2⁷ = 338670281 is a prime.

It is a super-2 number, since 2×338670409² = 229395291864454562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338670809) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1416912 + ... + 1417150.

Almost surely, 2^338670409 is an apocalyptic number.

338670409 is the 18403-rd square number.

338670409 is the 9202-nd centered octagonal number.

It is an amenable number.

338670409 is a deficient number, since it is larger than the sum of its proper divisors (96183332).

338670409 is an equidigital number, since it uses as much as digits as its factorization.

338670409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The cubic root of 338670409 is about 697.0422197974.

The spelling of 338670409 in words is "three hundred thirty-eight million, six hundred seventy thousand, four hundred nine".