76985539 has 2 divisors, whose sum is σ = 76985540. Its totient is φ = 76985538.

The previous prime is 76985527. The next prime is 76985563. The reversal of 76985539 is 93558967.

It is a weak prime.

It is an emirp because it is prime and its reverse (93558967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76985539 - 2⁵ = 76985507 is a prime.

It is not a weakly prime, because it can be changed into another prime (76985569) 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, 38492769 + 38492770.

It is an arithmetic number, because the mean of its divisors is an integer number (38492770).

Almost surely, 2^76985539 is an apocalyptic number.

76985539 is a deficient number, since it is larger than the sum of its proper divisors (1).

76985539 is an equidigital number, since it uses as much as digits as its factorization.

76985539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 76985539 is about 8774.1403567529. The cubic root of 76985539 is about 425.4054520588.

The spelling of 76985539 in words is "seventy-six million, nine hundred eighty-five thousand, five hundred thirty-nine".