850788909 has 24 divisors (see below), whose sum is σ = 1280260800. Its totient is φ = 543965760.

The previous prime is 850788901. The next prime is 850788937. The reversal of 850788909 is 909887058.

It is not a de Polignac number, because 850788909 - 2³ = 850788901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850788901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2232 + ... + 41310.

It is an arithmetic number, because the mean of its divisors is an integer number (53344200).

Almost surely, 2^850788909 is an apocalyptic number.

It is an amenable number.

850788909 is a deficient number, since it is larger than the sum of its proper divisors (429471891).

850788909 is a wasteful number, since it uses less digits than its factorization.

850788909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39185 (or 39182 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 850788909 is about 29168.2860140941. The cubic root of 850788909 is about 947.5612086987.

The spelling of 850788909 in words is "eight hundred fifty million, seven hundred eighty-eight thousand, nine hundred nine".