850785973 has 2 divisors, whose sum is σ = 850785974. Its totient is φ = 850785972.

The previous prime is 850785941. The next prime is 850786037. The reversal of 850785973 is 379587058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609201124 + 241584849 = 24682^2 + 15543^2 .

It is a cyclic number.

It is not a de Polignac number, because 850785973 - 2⁵ = 850785941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 850785973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850785373) 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, 425392986 + 425392987.

It is an arithmetic number, because the mean of its divisors is an integer number (425392987).

Almost surely, 2^850785973 is an apocalyptic number.

It is an amenable number.

850785973 is a deficient number, since it is larger than the sum of its proper divisors (1).

850785973 is an equidigital number, since it uses as much as digits as its factorization.

850785973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The square root of 850785973 is about 29168.2356854164. The cubic root of 850785973 is about 947.5601187131.

The spelling of 850785973 in words is "eight hundred fifty million, seven hundred eighty-five thousand, nine hundred seventy-three".