8147479 has 4 divisors (see below), whose sum is σ = 8346240. Its totient is φ = 7948720.

The previous prime is 8147449. The next prime is 8147483. The reversal of 8147479 is 9747418.

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 8147479 - 2⁷ = 8147351 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147449) 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, 99319 + ... + 99400.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^8147479 is an apocalyptic number.

8147479 is a deficient number, since it is larger than the sum of its proper divisors (198761).

8147479 is a wasteful number, since it uses less digits than its factorization.

8147479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198760.

The product of its digits is 56448, while the sum is 40.

The square root of 8147479 is about 2854.3789166822. The cubic root of 8147479 is about 201.2215159718.

The spelling of 8147479 in words is "eight million, one hundred forty-seven thousand, four hundred seventy-nine".