869019769 has 2 divisors, whose sum is σ = 869019770. Its totient is φ = 869019768.

The previous prime is 869019733. The next prime is 869019797. The reversal of 869019769 is 967910968.

869019769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783272169 + 85747600 = 27987^2 + 9260^2 .

It is a cyclic number.

It is not a de Polignac number, because 869019769 - 2⁹ = 869019257 is a prime.

It is a super-2 number, since 2×869019769² = 1510390717825626722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (869019709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434509884 + 434509885.

It is an arithmetic number, because the mean of its divisors is an integer number (434509885).

Almost surely, 2^869019769 is an apocalyptic number.

It is an amenable number.

869019769 is a deficient number, since it is larger than the sum of its proper divisors (1).

869019769 is an equidigital number, since it uses as much as digits as its factorization.

869019769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 869019769 is about 29479.1412527570. The cubic root of 869019769 is about 954.2816044028.

The spelling of 869019769 in words is "eight hundred sixty-nine million, nineteen thousand, seven hundred sixty-nine".