769416689 has 2 divisors, whose sum is σ = 769416690. Its totient is φ = 769416688.

The previous prime is 769416667. The next prime is 769416691. The reversal of 769416689 is 986614967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571592464 + 197824225 = 23908^2 + 14065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-769416689 is a prime.

It is a Sophie Germain prime.

Together with 769416691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (769410689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384708344 + 384708345.

It is an arithmetic number, because the mean of its divisors is an integer number (384708345).

Almost surely, 2^769416689 is an apocalyptic number.

It is an amenable number.

769416689 is a deficient number, since it is larger than the sum of its proper divisors (1).

769416689 is an equidigital number, since it uses as much as digits as its factorization.

769416689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The square root of 769416689 is about 27738.3613250675. The cubic root of 769416689 is about 916.3341398548.

The spelling of 769416689 in words is "seven hundred sixty-nine million, four hundred sixteen thousand, six hundred eighty-nine".