765990469 has 2 divisors, whose sum is σ = 765990470. Its totient is φ = 765990468.

The previous prime is 765990419. The next prime is 765990493. The reversal of 765990469 is 964099567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705539844 + 60450625 = 26562^2 + 7775^2 .

It is a cyclic number.

It is not a de Polignac number, because 765990469 - 2⁷ = 765990341 is a prime.

It is a super-2 number, since 2×765990469² = 1173482797197679922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765990409) 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, 382995234 + 382995235.

It is an arithmetic number, because the mean of its divisors is an integer number (382995235).

Almost surely, 2^765990469 is an apocalyptic number.

It is an amenable number.

765990469 is a deficient number, since it is larger than the sum of its proper divisors (1).

765990469 is an equidigital number, since it uses as much as digits as its factorization.

765990469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 765990469 is about 27676.5328211465. The cubic root of 765990469 is about 914.9719676483.

The spelling of 765990469 in words is "seven hundred sixty-five million, nine hundred ninety thousand, four hundred sixty-nine".