858022009 has 16 divisors (see below), whose sum is σ = 931533120. Its totient is φ = 785615040.

The previous prime is 858021991. The next prime is 858022019. The reversal of 858022009 is 900220858.

It is a cyclic number.

It is not a de Polignac number, because 858022009 - 2¹⁷ = 857890937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858022019) 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 15 ways as a sum of consecutive naturals, for example, 1461414 + ... + 1462000.

It is an arithmetic number, because the mean of its divisors is an integer number (58220820).

Almost surely, 2^858022009 is an apocalyptic number.

It is an amenable number.

858022009 is a deficient number, since it is larger than the sum of its proper divisors (73511111).

858022009 is a wasteful number, since it uses less digits than its factorization.

858022009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 858022009 is about 29292.0127167800. The cubic root of 858022009 is about 950.2389090731.

The spelling of 858022009 in words is "eight hundred fifty-eight million, twenty-two thousand, nine".