8817979 has 4 divisors (see below), whose sum is σ = 8908984. Its totient is φ = 8726976.

The previous prime is 8817973. The next prime is 8818009. The reversal of 8817979 is 9797188.

8817979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-8817979 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8817973) 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, 45357 + ... + 45550.

It is an arithmetic number, because the mean of its divisors is an integer number (2227246).

Almost surely, 2^8817979 is an apocalyptic number.

8817979 is a deficient number, since it is larger than the sum of its proper divisors (91005).

8817979 is an equidigital number, since it uses as much as digits as its factorization.

8817979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91004.

The product of its digits is 254016, while the sum is 49.

The square root of 8817979 is about 2969.5082084413. The cubic root of 8817979 is about 206.5965286911.

The spelling of 8817979 in words is "eight million, eight hundred seventeen thousand, nine hundred seventy-nine".