8478380091 has 8 divisors (see below), whose sum is σ = 11304936720. Its totient is φ = 5652038432.

The previous prime is 8478380077. The next prime is 8478380101. The reversal of 8478380091 is 1900838748.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8478380091 - 2¹¹ = 8478378043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8478380091.

It is not an unprimeable number, because it can be changed into a prime (8478380591) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106801 + ... + 168413.

It is an arithmetic number, because the mean of its divisors is an integer number (1413117090).

Almost surely, 2^8478380091 is an apocalyptic number.

8478380091 is a deficient number, since it is larger than the sum of its proper divisors (2826556629).

8478380091 is a wasteful number, since it uses less digits than its factorization.

8478380091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107485.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 8478380091 is about 92078.1195018665. The cubic root of 8478380091 is about 2039.0957875197.

The spelling of 8478380091 in words is "eight billion, four hundred seventy-eight million, three hundred eighty thousand, ninety-one".