8478789 has 16 divisors (see below), whose sum is σ = 12870144. Its totient is φ = 4914800.

The previous prime is 8478751. The next prime is 8478791. The reversal of 8478789 is 9878748.

It is not a de Polignac number, because 8478789 - 2¹³ = 8470597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4827 + ... + 6344.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^8478789 is an apocalyptic number.

It is an amenable number.

8478789 is a deficient number, since it is larger than the sum of its proper divisors (4391355).

8478789 is a wasteful number, since it uses less digits than its factorization.

8478789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208.

The product of its digits is 903168, while the sum is 51.

The square root of 8478789 is about 2911.8360187346. The cubic root of 8478789 is about 203.9128568594.

The spelling of 8478789 in words is "eight million, four hundred seventy-eight thousand, seven hundred eighty-nine".