8936021 has 2 divisors, whose sum is σ = 8936022. Its totient is φ = 8936020.

The previous prime is 8936017. The next prime is 8936027. The reversal of 8936021 is 1206398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 784996 = 2855^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 8936021 - 2² = 8936017 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 (8936027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4468010 + 4468011.

It is an arithmetic number, because the mean of its divisors is an integer number (4468011).

Almost surely, 2^8936021 is an apocalyptic number.

It is an amenable number.

8936021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8936021 is an equidigital number, since it uses as much as digits as its factorization.

8936021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 8936021 is about 2989.3178151545. The cubic root of 8936021 is about 207.5143145880.

The spelling of 8936021 in words is "eight million, nine hundred thirty-six thousand, twenty-one".