8617979 has 4 divisors (see below), whose sum is σ = 8627976. Its totient is φ = 8607984.

The previous prime is 8617949. The next prime is 8617991. The reversal of 8617979 is 9797168.

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 8617979 - 2¹⁶ = 8552443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8617949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3569 + ... + 5474.

It is an arithmetic number, because the mean of its divisors is an integer number (2156994).

Almost surely, 2^8617979 is an apocalyptic number.

8617979 is a deficient number, since it is larger than the sum of its proper divisors (9997).

8617979 is an equidigital number, since it uses as much as digits as its factorization.

8617979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9996.

The product of its digits is 190512, while the sum is 47.

The square root of 8617979 is about 2935.6394533389. The cubic root of 8617979 is about 205.0226348198.

The spelling of 8617979 in words is "eight million, six hundred seventeen thousand, nine hundred seventy-nine".