83239643 has 2 divisors, whose sum is σ = 83239644. Its totient is φ = 83239642.

The previous prime is 83239631. The next prime is 83239697. The reversal of 83239643 is 34693238.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83239643 - 2¹⁰ = 83238619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83239597 and 83239606.

It is not a weakly prime, because it can be changed into another prime (83239613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41619821 + 41619822.

It is an arithmetic number, because the mean of its divisors is an integer number (41619822).

Almost surely, 2^83239643 is an apocalyptic number.

83239643 is a deficient number, since it is larger than the sum of its proper divisors (1).

83239643 is an equidigital number, since it uses as much as digits as its factorization.

83239643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 83239643 is about 9123.5762176901. The cubic root of 83239643 is about 436.6264788945.

The spelling of 83239643 in words is "eighty-three million, two hundred thirty-nine thousand, six hundred forty-three".