12750009 has 8 divisors (see below), whose sum is σ = 17017920. Its totient is φ = 8491056.

The previous prime is 12749953. The next prime is 12750011. The reversal of 12750009 is 90005721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12750009 - 2⁸ = 12749753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12750209) 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 7 ways as a sum of consecutive naturals, for example, 2547 + ... + 5655.

It is an arithmetic number, because the mean of its divisors is an integer number (2127240).

Almost surely, 2^12750009 is an apocalyptic number.

It is an amenable number.

12750009 is a deficient number, since it is larger than the sum of its proper divisors (4267911).

12750009 is a wasteful number, since it uses less digits than its factorization.

12750009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 12750009 is about 3570.7154745233. The cubic root of 12750009 is about 233.6164913863.

The spelling of 12750009 in words is "twelve million, seven hundred fifty thousand, nine".