850837221 has 48 divisors (see below), whose sum is σ = 1351459200. Its totient is φ = 512645760.

The previous prime is 850837201. The next prime is 850837243. The reversal of 850837221 is 122738058.

It is not a de Polignac number, because 850837221 - 2⁷ = 850837093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850837201) 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 in 47 ways as a sum of consecutive naturals, for example, 2437755 + ... + 2438103.

It is an arithmetic number, because the mean of its divisors is an integer number (28155400).

Almost surely, 2^850837221 is an apocalyptic number.

It is an amenable number.

850837221 is a deficient number, since it is larger than the sum of its proper divisors (500621979).

850837221 is a wasteful number, since it uses less digits than its factorization.

850837221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 850837221 is about 29169.1141620722. The cubic root of 850837221 is about 947.5791440957.

The spelling of 850837221 in words is "eight hundred fifty million, eight hundred thirty-seven thousand, two hundred twenty-one".