8265989 has 2 divisors, whose sum is σ = 8265990. Its totient is φ = 8265988.

The previous prime is 8265979. The next prime is 8266001. The reversal of 8265989 is 9895628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 240100 = 2833^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 8265989 - 2⁴ = 8265973 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 (8265919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4132994 + 4132995.

It is an arithmetic number, because the mean of its divisors is an integer number (4132995).

Almost surely, 2^8265989 is an apocalyptic number.

It is an amenable number.

8265989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8265989 is an equidigital number, since it uses as much as digits as its factorization.

8265989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 8265989 is about 2875.0633036509. The cubic root of 8265989 is about 202.1924529275.

The spelling of 8265989 in words is "eight million, two hundred sixty-five thousand, nine hundred eighty-nine".