769669189 has 2 divisors, whose sum is σ = 769669190. Its totient is φ = 769669188.

The previous prime is 769669183. The next prime is 769669207. The reversal of 769669189 is 981966967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769618564 + 50625 = 27742^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 769669189 - 2⁹ = 769668677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769669183) 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, 384834594 + 384834595.

It is an arithmetic number, because the mean of its divisors is an integer number (384834595).

Almost surely, 2^769669189 is an apocalyptic number.

It is an amenable number.

769669189 is a deficient number, since it is larger than the sum of its proper divisors (1).

769669189 is an equidigital number, since it uses as much as digits as its factorization.

769669189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 61.

The square root of 769669189 is about 27742.9124101995. The cubic root of 769669189 is about 916.4343668918.

The spelling of 769669189 in words is "seven hundred sixty-nine million, six hundred sixty-nine thousand, one hundred eighty-nine".