8979021 has 12 divisors (see below), whose sum is σ = 13246272. Its totient is φ = 5858376.

The previous prime is 8979013. The next prime is 8979029. The reversal of 8979021 is 1209798.

It is a happy number.

8979021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8979013) and next prime (8979029).

It is not a de Polignac number, because 8979021 - 2³ = 8979013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8979029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10191 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (1103856).

Almost surely, 2^8979021 is an apocalyptic number.

It is an amenable number.

8979021 is a deficient number, since it is larger than the sum of its proper divisors (4267251).

8979021 is a wasteful number, since it uses less digits than its factorization.

8979021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21280 (or 21277 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 8979021 is about 2996.5014600364. The cubic root of 8979021 is about 207.8466340486.

The spelling of 8979021 in words is "eight million, nine hundred seventy-nine thousand, twenty-one".