8879021 has 2 divisors, whose sum is σ = 8879022. Its totient is φ = 8879020.

The previous prime is 8878999. The next prime is 8879069. The reversal of 8879021 is 1209788.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8094025 + 784996 = 2845^2 + 886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8879021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8870021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4439510 + 4439511.

It is an arithmetic number, because the mean of its divisors is an integer number (4439511).

Almost surely, 2^8879021 is an apocalyptic number.

It is an amenable number.

8879021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8879021 is an equidigital number, since it uses as much as digits as its factorization.

8879021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 8879021 is about 2979.7686151780. The cubic root of 8879021 is about 207.0721507842.

The spelling of 8879021 in words is "eight million, eight hundred seventy-nine thousand, twenty-one".