7982539 has 2 divisors, whose sum is σ = 7982540. Its totient is φ = 7982538.

The previous prime is 7982509. The next prime is 7982543. The reversal of 7982539 is 9352897.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7982539 - 2¹¹ = 7980491 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁸ + 9⁵ + 8⁵ + 2⁵ + 5³ + 3¹³ + 9⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 7982495 and 7982504.

It is not a weakly prime, because it can be changed into another prime (7982509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3991269 + 3991270.

It is an arithmetic number, because the mean of its divisors is an integer number (3991270).

Almost surely, 2^7982539 is an apocalyptic number.

7982539 is a deficient number, since it is larger than the sum of its proper divisors (1).

7982539 is an equidigital number, since it uses as much as digits as its factorization.

7982539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 7982539 is about 2825.3387407530. The cubic root of 7982539 is about 199.8543856747.

The spelling of 7982539 in words is "seven million, nine hundred eighty-two thousand, five hundred thirty-nine".