869767007789 has 2 divisors, whose sum is σ = 869767007790. Its totient is φ = 869767007788.

The previous prime is 869767007773. The next prime is 869767007827. The reversal of 869767007789 is 987700767968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522934352164 + 346832655625 = 723142^2 + 588925^2 .

It is a cyclic number.

It is not a de Polignac number, because 869767007789 - 2⁴ = 869767007773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869767007489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434883503894 + 434883503895.

It is an arithmetic number, because the mean of its divisors is an integer number (434883503895).

Almost surely, 2^869767007789 is an apocalyptic number.

It is an amenable number.

869767007789 is a deficient number, since it is larger than the sum of its proper divisors (1).

869767007789 is an equidigital number, since it uses as much as digits as its factorization.

869767007789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448084224, while the sum is 74.

The spelling of 869767007789 in words is "eight hundred sixty-nine billion, seven hundred sixty-seven million, seven thousand, seven hundred eighty-nine".