8466421885 has 4 divisors (see below), whose sum is σ = 10159706268. Its totient is φ = 6773137504.

The previous prime is 8466421883. The next prime is 8466421921. The reversal of 8466421885 is 5881246648.

It is a happy number.

8466421885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6491686041 + 1974735844 = 80571^2 + 44438^2 .

It is a cyclic number.

It is not a de Polignac number, because 8466421885 - 2¹ = 8466421883 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 (8466421883) 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 3 ways as a sum of consecutive naturals, for example, 846642184 + ... + 846642193.

It is an arithmetic number, because the mean of its divisors is an integer number (2539926567).

Almost surely, 2^8466421885 is an apocalyptic number.

It is an amenable number.

8466421885 is a deficient number, since it is larger than the sum of its proper divisors (1693284383).

8466421885 is a wasteful number, since it uses less digits than its factorization.

8466421885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693284382.

The product of its digits is 2949120, while the sum is 52.

The square root of 8466421885 is about 92013.1614770409. The cubic root of 8466421885 is about 2038.1366656044.

The spelling of 8466421885 in words is "eight billion, four hundred sixty-six million, four hundred twenty-one thousand, eight hundred eighty-five".