83730239 has 2 divisors, whose sum is σ = 83730240. Its totient is φ = 83730238.

The previous prime is 83730233. The next prime is 83730271. The reversal of 83730239 is 93203738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83730239 - 2¹² = 83726143 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 83730199 and 83730208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83730233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41865119 + 41865120.

It is an arithmetic number, because the mean of its divisors is an integer number (41865120).

Almost surely, 2^83730239 is an apocalyptic number.

83730239 is a deficient number, since it is larger than the sum of its proper divisors (1).

83730239 is an equidigital number, since it uses as much as digits as its factorization.

83730239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 83730239 is about 9150.4228864026. The cubic root of 83730239 is about 437.4825923958.

The spelling of 83730239 in words is "eighty-three million, seven hundred thirty thousand, two hundred thirty-nine".