8419478956 has 24 divisors (see below), whose sum is σ = 17829485856. Its totient is φ = 3396092160.

The previous prime is 8419478941. The next prime is 8419478959. The reversal of 8419478956 is 6598749148.

It is a junction number, because it is equal to n+sod(n) for n = 8419478894 and 8419478903.

It is not an unprimeable number, because it can be changed into a prime (8419478959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8843515 + ... + 8844466.

It is an arithmetic number, because the mean of its divisors is an integer number (742895244).

Almost surely, 2^8419478956 is an apocalyptic number.

It is an amenable number.

8419478956 is an abundant number, since it is smaller than the sum of its proper divisors (9410006900).

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

8419478956 is a wasteful number, since it uses less digits than its factorization.

8419478956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17688009 (or 17688007 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 61.

The square root of 8419478956 is about 91757.7187815826. The cubic root of 8419478956 is about 2034.3627974382.

The spelling of 8419478956 in words is "eight billion, four hundred nineteen million, four hundred seventy-eight thousand, nine hundred fifty-six".