338648393 has 8 divisors (see below), whose sum is σ = 344493576. Its totient is φ = 332812800.

The previous prime is 338648369. The next prime is 338648411. The reversal of 338648393 is 393846833.

It can be written as a sum of positive squares in 4 ways, for example, as 58186384 + 280462009 = 7628^2 + 16747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338648393 is a prime.

It is a super-2 number, since 2×338648393² = 229365468162964898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (338648333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129305 + ... + 131897.

It is an arithmetic number, because the mean of its divisors is an integer number (43061697).

Almost surely, 2^338648393 is an apocalyptic number.

It is an amenable number.

338648393 is a deficient number, since it is larger than the sum of its proper divisors (5845183).

338648393 is a wasteful number, since it uses less digits than its factorization.

338648393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795.

The product of its digits is 1119744, while the sum is 47.

The square root of 338648393 is about 18402.4018269355. The cubic root of 338648393 is about 697.0271152261.

The spelling of 338648393 in words is "three hundred thirty-eight million, six hundred forty-eight thousand, three hundred ninety-three".