850922981 has 16 divisors (see below), whose sum is σ = 917412480. Its totient is φ = 786339840.

The previous prime is 850922971. The next prime is 850923011. The reversal of 850922981 is 189229058.

850922981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 850922981 - 2¹⁰ = 850921957 is a prime.

It is a super-2 number, since 2×850922981² = 1448139839187852722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850922951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407861 + ... + 409941.

It is an arithmetic number, because the mean of its divisors is an integer number (57338280).

Almost surely, 2^850922981 is an apocalyptic number.

It is an amenable number.

850922981 is a deficient number, since it is larger than the sum of its proper divisors (66489499).

850922981 is a wasteful number, since it uses less digits than its factorization.

850922981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 850922981 is about 29170.5841731015. The cubic root of 850922981 is about 947.6109800549.

The spelling of 850922981 in words is "eight hundred fifty million, nine hundred twenty-two thousand, nine hundred eighty-one".