8000989 has 2 divisors, whose sum is σ = 8000990. Its totient is φ = 8000988.

The previous prime is 8000983. The next prime is 8001029. The reversal of 8000989 is 9890008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5212089 + 2788900 = 2283^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 8000989 - 2³ = 8000981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8000981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000494 + 4000495.

It is an arithmetic number, because the mean of its divisors is an integer number (4000495).

Almost surely, 2^8000989 is an apocalyptic number.

It is an amenable number.

8000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8000989 is an equidigital number, since it uses as much as digits as its factorization.

8000989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 8000989 is about 2828.6019514948. The cubic root of 8000989 is about 200.0082413271.

The spelling of 8000989 in words is "eight million, nine hundred eighty-nine", and thus it is an aban number.