11750009 has 8 divisors (see below), whose sum is σ = 12479688. Its totient is φ = 11024640.

The previous prime is 11749993. The next prime is 11750021. The reversal of 11750009 is 90005711.

It can be written as a sum of positive squares in 4 ways, for example, as 727609 + 11022400 = 853^2 + 3320^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11750009 - 2⁴ = 11749993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11750029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5879 + ... + 7619.

It is an arithmetic number, because the mean of its divisors is an integer number (1559961).

Almost surely, 2^11750009 is an apocalyptic number.

It is an amenable number.

11750009 is a deficient number, since it is larger than the sum of its proper divisors (729679).

11750009 is a wasteful number, since it uses less digits than its factorization.

11750009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 11750009 is about 3427.8286129852. The cubic root of 11750009 is about 227.3418552335.

The spelling of 11750009 in words is "eleven million, seven hundred fifty thousand, nine".