8378479872 has 108 divisors (see below), whose sum is σ = 27608308000. Its totient is φ = 2393846784.

The previous prime is 8378479849. The next prime is 8378479877. The reversal of 8378479872 is 2789748738.

8378479872 is a `hidden beast` number, since 83 + 7 + 8 + 479 + 87 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378479877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243622 + ... + 275877.

Almost surely, 2^8378479872 is an apocalyptic number.

It is an amenable number.

8378479872 is an abundant number, since it is smaller than the sum of its proper divisors (19229828128).

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

8378479872 is a wasteful number, since it uses less digits than its factorization.

8378479872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519528 (or 519511 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The square root of 8378479872 is about 91534.0366858143. The cubic root of 8378479872 is about 2031.0552782908.

The spelling of 8378479872 in words is "eight billion, three hundred seventy-eight million, four hundred seventy-nine thousand, eight hundred seventy-two".