8211878484 has 12 divisors (see below), whose sum is σ = 19161049824. Its totient is φ = 2737292824.

The previous prime is 8211878471. The next prime is 8211878501. The reversal of 8211878484 is 4848781128.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342161592 + ... + 342161615.

It is an arithmetic number, because the mean of its divisors is an integer number (1596754152).

Almost surely, 2^8211878484 is an apocalyptic number.

It is an amenable number.

8211878484 is an abundant number, since it is smaller than the sum of its proper divisors (10949171340).

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

8211878484 is a wasteful number, since it uses less digits than its factorization.

8211878484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684323214 (or 684323212 counting only the distinct ones).

The product of its digits is 917504, while the sum is 51.

The square root of 8211878484 is about 90619.4156017352. The cubic root of 8211878484 is about 2017.5029174360.

The spelling of 8211878484 in words is "eight billion, two hundred eleven million, eight hundred seventy-eight thousand, four hundred eighty-four".