338312909 has 16 divisors (see below), whose sum is σ = 377865216. Its totient is φ = 300260400.

The previous prime is 338312899. The next prime is 338312929. The reversal of 338312909 is 909213833.

It is a de Polignac number, because none of the positive numbers 2^k-338312909 is a prime.

It is a super-2 number, since 2×338312909² = 228911248792084562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338312929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356774 + ... + 357720.

It is an arithmetic number, because the mean of its divisors is an integer number (23616576).

Almost surely, 2^338312909 is an apocalyptic number.

It is an amenable number.

338312909 is a deficient number, since it is larger than the sum of its proper divisors (39552307).

338312909 is a wasteful number, since it uses less digits than its factorization.

338312909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 338312909 is about 18393.2843451081. The cubic root of 338312909 is about 696.7968678556.

The spelling of 338312909 in words is "three hundred thirty-eight million, three hundred twelve thousand, nine hundred nine".