8993509 has 12 divisors (see below), whose sum is σ = 10824300. Its totient is φ = 7441728.

The previous prime is 8993507. The next prime is 8993531. The reversal of 8993509 is 9053998.

8993509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5832225 + 3161284 = 2415^2 + 1778^2 .

It is not a de Polignac number, because 8993509 - 2¹ = 8993507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8993507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1744 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (902025).

Almost surely, 2^8993509 is an apocalyptic number.

It is an amenable number.

8993509 is a deficient number, since it is larger than the sum of its proper divisors (1830791).

8993509 is a wasteful number, since it uses less digits than its factorization.

8993509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372 (or 6365 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 8993509 is about 2998.9179715357. The cubic root of 8993509 is about 207.9583635225.

The spelling of 8993509 in words is "eight million, nine hundred ninety-three thousand, five hundred nine".