83638339 has 2 divisors, whose sum is σ = 83638340. Its totient is φ = 83638338.

The previous prime is 83638309. The next prime is 83638393. The reversal of 83638339 is 93383638.

Together with next prime (83638393) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83638339 - 2¹³ = 83630147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83638295 and 83638304.

It is not a weakly prime, because it can be changed into another prime (83638309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41819169 + 41819170.

It is an arithmetic number, because the mean of its divisors is an integer number (41819170).

Almost surely, 2^83638339 is an apocalyptic number.

83638339 is a deficient number, since it is larger than the sum of its proper divisors (1).

83638339 is an equidigital number, since it uses as much as digits as its factorization.

83638339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 83638339 is about 9145.3998819078. The cubic root of 83638339 is about 437.3224775282.

The spelling of 83638339 in words is "eighty-three million, six hundred thirty-eight thousand, three hundred thirty-nine".