8422979 has 8 divisors (see below), whose sum is σ = 8752128. Its totient is φ = 8097480.

The previous prime is 8422949. The next prime is 8422993. The reversal of 8422979 is 9792248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8422979 - 2⁸ = 8422723 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8³ + 4⁵ + 2¹⁵ + 2²³ + 9 + 7² + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8422949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4364 + ... + 5990.

It is an arithmetic number, because the mean of its divisors is an integer number (1094016).

Almost surely, 2^8422979 is an apocalyptic number.

8422979 is a deficient number, since it is larger than the sum of its proper divisors (329149).

8422979 is a wasteful number, since it uses less digits than its factorization.

8422979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its digits is 72576, while the sum is 41.

The square root of 8422979 is about 2902.2368959132. The cubic root of 8422979 is about 203.4644658620.

The spelling of 8422979 in words is "eight million, four hundred twenty-two thousand, nine hundred seventy-nine".