8792009 has 4 divisors (see below), whose sum is σ = 9309204. Its totient is φ = 8274816.

The previous prime is 8791987. The next prime is 8792027. The reversal of 8792009 is 9002978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9002978 = 2 ⋅4501489.

It can be written as a sum of positive squares in 2 ways, for example, as 6775609 + 2016400 = 2603^2 + 1420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8792009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8792009.

It is not an unprimeable number, because it can be changed into a prime (8792039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258572 + ... + 258605.

It is an arithmetic number, because the mean of its divisors is an integer number (2327301).

Almost surely, 2^8792009 is an apocalyptic number.

It is an amenable number.

8792009 is a deficient number, since it is larger than the sum of its proper divisors (517195).

8792009 is a wasteful number, since it uses less digits than its factorization.

8792009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517194.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 8792009 is about 2965.1322061588. The cubic root of 8792009 is about 206.3935121175.

The spelling of 8792009 in words is "eight million, seven hundred ninety-two thousand, nine".