8478915772 has 12 divisors (see below), whose sum is σ = 15316751296. Its totient is φ = 4102701120.

The previous prime is 8478915703. The next prime is 8478915773. The reversal of 8478915772 is 2775198748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478915773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34189053 + ... + 34189300.

Almost surely, 2^8478915772 is an apocalyptic number.

It is an amenable number.

8478915772 is a deficient number, since it is larger than the sum of its proper divisors (6837835524).

8478915772 is a wasteful number, since it uses less digits than its factorization.

8478915772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68378388 (or 68378386 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 58.

The square root of 8478915772 is about 92081.0282957353. The cubic root of 8478915772 is about 2039.1387313311.

The spelling of 8478915772 in words is "eight billion, four hundred seventy-eight million, nine hundred fifteen thousand, seven hundred seventy-two".