8028009 has 24 divisors (see below), whose sum is σ = 12815712. Its totient is φ = 4801920.

The previous prime is 8027969. The next prime is 8028019. The reversal of 8028009 is 9008208.

It is not a de Polignac number, because 8028009 - 2⁹ = 8027497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8028019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7729 + ... + 8705.

It is an arithmetic number, because the mean of its divisors is an integer number (533988).

Almost surely, 2^8028009 is an apocalyptic number.

It is an amenable number.

8028009 is a deficient number, since it is larger than the sum of its proper divisors (4787703).

8028009 is a wasteful number, since it uses less digits than its factorization.

8028009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8028009 is about 2833.3741369611. The cubic root of 8028009 is about 200.2331364647.

The spelling of 8028009 in words is "eight million, twenty-eight thousand, nine".