8478573287 has 4 divisors (see below), whose sum is σ = 8479009440. Its totient is φ = 8478137136.

The previous prime is 8478573277. The next prime is 8478573331. The reversal of 8478573287 is 7823758748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8478573287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478573277) 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, 187487 + ... + 228272.

It is an arithmetic number, because the mean of its divisors is an integer number (2119752360).

Almost surely, 2^8478573287 is an apocalyptic number.

8478573287 is a deficient number, since it is larger than the sum of its proper divisors (436153).

8478573287 is a wasteful number, since it uses less digits than its factorization.

8478573287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436152.

The product of its digits is 21073920, while the sum is 59.

The square root of 8478573287 is about 92079.1685833446. The cubic root of 8478573287 is about 2039.1112756261. Note that the first 3 decimals are identical.

The spelling of 8478573287 in words is "eight billion, four hundred seventy-eight million, five hundred seventy-three thousand, two hundred eighty-seven".