850340789 has 2 divisors, whose sum is σ = 850340790. Its totient is φ = 850340788.

The previous prime is 850340759. The next prime is 850340831. The reversal of 850340789 is 987043058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770506564 + 79834225 = 27758^2 + 8935^2 .

It is a cyclic number.

It is not a de Polignac number, because 850340789 - 2¹⁶ = 850275253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850340749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425170394 + 425170395.

It is an arithmetic number, because the mean of its divisors is an integer number (425170395).

Almost surely, 2^850340789 is an apocalyptic number.

It is an amenable number.

850340789 is a deficient number, since it is larger than the sum of its proper divisors (1).

850340789 is an equidigital number, since it uses as much as digits as its factorization.

850340789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 850340789 is about 29160.6033716725. The cubic root of 850340789 is about 947.3948157987.

The spelling of 850340789 in words is "eight hundred fifty million, three hundred forty thousand, seven hundred eighty-nine".