83338909 has 4 divisors (see below), whose sum is σ = 83358304. Its totient is φ = 83319516.

The previous prime is 83338907. The next prime is 83338919. The reversal of 83338909 is 90983338.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90983338 = 2 ⋅45491669.

It is a cyclic number.

It is not a de Polignac number, because 83338909 - 2¹ = 83338907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83338901) 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, 57 + ... + 12910.

It is an arithmetic number, because the mean of its divisors is an integer number (20839576).

Almost surely, 2^83338909 is an apocalyptic number.

It is an amenable number.

83338909 is a deficient number, since it is larger than the sum of its proper divisors (19395).

83338909 is a wasteful number, since it uses less digits than its factorization.

83338909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19394.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 83338909 is about 9129.0146784853. The cubic root of 83338909 is about 436.7999737378.

The spelling of 83338909 in words is "eighty-three million, three hundred thirty-eight thousand, nine hundred nine".