8147979 has 32 divisors (see below), whose sum is σ = 14528000. Its totient is φ = 4408992.

The previous prime is 8147977. The next prime is 8147983. The reversal of 8147979 is 9797418.

It is not a de Polignac number, because 8147979 - 2¹ = 8147977 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

8147979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8147977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2457 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (454000).

Almost surely, 2^8147979 is an apocalyptic number.

8147979 is a deficient number, since it is larger than the sum of its proper divisors (6380021).

8147979 is a wasteful number, since it uses less digits than its factorization.

8147979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2298 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 8147979 is about 2854.4665000662. The cubic root of 8147979 is about 201.2256321203.

The spelling of 8147979 in words is "eight million, one hundred forty-seven thousand, nine hundred seventy-nine".