8979821 has 8 divisors (see below), whose sum is σ = 9694080. Its totient is φ = 8292592.

The previous prime is 8979811. The next prime is 8979827. The reversal of 8979821 is 1289798.

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 8979821 - 2¹⁸ = 8717677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8979827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6065 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (1211760).

Almost surely, 2^8979821 is an apocalyptic number.

It is an amenable number.

8979821 is a deficient number, since it is larger than the sum of its proper divisors (714259).

8979821 is a wasteful number, since it uses less digits than its factorization.

8979821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13515.

The product of its digits is 72576, while the sum is 44.

The square root of 8979821 is about 2996.6349460687. The cubic root of 8979821 is about 207.8528066729.

The spelling of 8979821 in words is "eight million, nine hundred seventy-nine thousand, eight hundred twenty-one".