765985039 has 2 divisors, whose sum is σ = 765985040. Its totient is φ = 765985038.

The previous prime is 765985009. The next prime is 765985043. The reversal of 765985039 is 930589567.

It is a strong prime.

It is an emirp because it is prime and its reverse (930589567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 765985039 - 2⁷ = 765984911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765985009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382992519 + 382992520.

It is an arithmetic number, because the mean of its divisors is an integer number (382992520).

Almost surely, 2^765985039 is an apocalyptic number.

765985039 is a deficient number, since it is larger than the sum of its proper divisors (1).

765985039 is an equidigital number, since it uses as much as digits as its factorization.

765985039 is an evil number, because the sum of its binary digits is even.

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

The square root of 765985039 is about 27676.4347234249. The cubic root of 765985039 is about 914.9698056068.

The spelling of 765985039 in words is "seven hundred sixty-five million, nine hundred eighty-five thousand, thirty-nine".