338648917 has 4 divisors (see below), whose sum is σ = 339898816. Its totient is φ = 337399020.

The previous prime is 338648879. The next prime is 338648927. The reversal of 338648917 is 719846833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 338648917 - 2¹⁹ = 338124629 is a prime.

It is a super-2 number, since 2×338648917² = 229366177970545778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338648927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624543 + ... + 625084.

It is an arithmetic number, because the mean of its divisors is an integer number (84974704).

Almost surely, 2^338648917 is an apocalyptic number.

It is an amenable number.

338648917 is a deficient number, since it is larger than the sum of its proper divisors (1249899).

338648917 is a wasteful number, since it uses less digits than its factorization.

338648917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249898.

The product of its digits is 870912, while the sum is 49.

The square root of 338648917 is about 18402.4160642020. The cubic root of 338648917 is about 697.0274747357.

The spelling of 338648917 in words is "three hundred thirty-eight million, six hundred forty-eight thousand, nine hundred seventeen".