8420964420 has 96 divisors (see below), whose sum is σ = 25855885440. Its totient is φ = 2030837760.

The previous prime is 8420964397. The next prime is 8420964451. The reversal of 8420964420 is 244690248.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 94326 + ... + 160434.

It is an arithmetic number, because the mean of its divisors is an integer number (269332140).

Almost surely, 2^8420964420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8420964420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12927942720).

8420964420 is an abundant number, since it is smaller than the sum of its proper divisors (17434921020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8420964420 is a wasteful number, since it uses less digits than its factorization.

8420964420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66325 (or 66323 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 8420964420 is about 91765.8129152682. The cubic root of 8420964420 is about 2034.4824325133.

The spelling of 8420964420 in words is "eight billion, four hundred twenty million, nine hundred sixty-four thousand, four hundred twenty".