886146821 has 6 divisors (see below), whose sum is σ = 1030823910. Its totient is φ = 759554376.

The previous prime is 886146797. The next prime is 886146847. The reversal of 886146821 is 128641688.

It can be written as a sum of positive squares in only one way, i.e., 860248900 + 25897921 = 29330^2 + 5089^2 .

It is not a de Polignac number, because 886146821 - 2¹⁸ = 885884677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (886146851) 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 5 ways as a sum of consecutive naturals, for example, 9042266 + ... + 9042363.

It is an arithmetic number, because the mean of its divisors is an integer number (171803985).

Almost surely, 2^886146821 is an apocalyptic number.

It is an amenable number.

886146821 is a deficient number, since it is larger than the sum of its proper divisors (144677089).

886146821 is a wasteful number, since it uses less digits than its factorization.

886146821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18084643 (or 18084636 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 886146821 is about 29768.2183040907. The cubic root of 886146821 is about 960.5100085916.

The spelling of 886146821 in words is "eight hundred eighty-six million, one hundred forty-six thousand, eight hundred twenty-one".