8009249 has 4 divisors (see below), whose sum is σ = 8285460. Its totient is φ = 7733040.

The previous prime is 8009237. The next prime is 8009291. The reversal of 8009249 is 9429008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1918225 + 6091024 = 1385^2 + 2468^2 .

It is a cyclic number.

It is not a de Polignac number, because 8009249 - 2⁴ = 8009233 is a prime.

It is a super-3 number, since 3×8009249³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8009219) 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, 138062 + ... + 138119.

It is an arithmetic number, because the mean of its divisors is an integer number (2071365).

Almost surely, 2^8009249 is an apocalyptic number.

It is an amenable number.

8009249 is a deficient number, since it is larger than the sum of its proper divisors (276211).

8009249 is a wasteful number, since it uses less digits than its factorization.

8009249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276210.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 8009249 is about 2830.0616601057. The cubic root of 8009249 is about 200.0770453163.

The spelling of 8009249 in words is "eight million, nine thousand, two hundred forty-nine".