8547478867 has 4 divisors (see below), whose sum is σ = 8547967480. Its totient is φ = 8546990256.

The previous prime is 8547478861. The next prime is 8547478931. The reversal of 8547478867 is 7688747458.

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

It is a cyclic number.

It is not a de Polignac number, because 8547478867 - 2¹⁹ = 8546954579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8547478799 and 8547478808.

It is not an unprimeable number, because it can be changed into a prime (8547478861) 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, 217053 + ... + 253390.

It is an arithmetic number, because the mean of its divisors is an integer number (2136991870).

Almost surely, 2^8547478867 is an apocalyptic number.

8547478867 is a deficient number, since it is larger than the sum of its proper divisors (488613).

8547478867 is a wasteful number, since it uses less digits than its factorization.

8547478867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488612.

The product of its digits is 84295680, while the sum is 64.

The square root of 8547478867 is about 92452.5763134808. The cubic root of 8547478867 is about 2044.6203480198.

The spelling of 8547478867 in words is "eight billion, five hundred forty-seven million, four hundred seventy-eight thousand, eight hundred sixty-seven".