11868009 has 16 divisors (see below), whose sum is σ = 16780800. Its totient is φ = 7447680.

The previous prime is 11867993. The next prime is 11868013. The reversal of 11868009 is 90086811.

It is not a de Polignac number, because 11868009 - 2⁴ = 11867993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11868019) 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 15 ways as a sum of consecutive naturals, for example, 1717 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (1048800).

Almost surely, 2^11868009 is an apocalyptic number.

It is an amenable number.

11868009 is a deficient number, since it is larger than the sum of its proper divisors (4912791).

11868009 is a wasteful number, since it uses less digits than its factorization.

11868009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 11868009 is about 3444.9976777931. The cubic root of 11868009 is about 228.1003521002.

The spelling of 11868009 in words is "eleven million, eight hundred sixty-eight thousand, nine".