8959021 has 2 divisors, whose sum is σ = 8959022. Its totient is φ = 8959020.

The previous prime is 8959001. The next prime is 8959063. The reversal of 8959021 is 1209598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6200100 + 2758921 = 2490^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 8959021 - 2⁷ = 8958893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8959001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4479510 + 4479511.

It is an arithmetic number, because the mean of its divisors is an integer number (4479511).

Almost surely, 2^8959021 is an apocalyptic number.

It is an amenable number.

8959021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8959021 is an equidigital number, since it uses as much as digits as its factorization.

8959021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 8959021 is about 2993.1623744795. The cubic root of 8959021 is about 207.6921991382.

The spelling of 8959021 in words is "eight million, nine hundred fifty-nine thousand, twenty-one".