8873509 has 4 divisors (see below), whose sum is σ = 8998560. Its totient is φ = 8748460.

The previous prime is 8873497. The next prime is 8873519. The reversal of 8873509 is 9053788.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8873509 - 2⁵ = 8873477 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

8873509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8873519) 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, 62419 + ... + 62560.

It is an arithmetic number, because the mean of its divisors is an integer number (2249640).

Almost surely, 2^8873509 is an apocalyptic number.

It is an amenable number.

8873509 is a deficient number, since it is larger than the sum of its proper divisors (125051).

8873509 is a wasteful number, since it uses less digits than its factorization.

8873509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125050.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 8873509 is about 2978.8435675611. The cubic root of 8873509 is about 207.0292925321.

The spelling of 8873509 in words is "eight million, eight hundred seventy-three thousand, five hundred nine".