11884009 has 2 divisors, whose sum is σ = 11884010. Its totient is φ = 11884008.

The previous prime is 11884007. The next prime is 11884027. The reversal of 11884009 is 90048811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 994009 = 3300^2 + 997^2 .

It is an emirp because it is prime and its reverse (90048811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11884009 - 2¹ = 11884007 is a prime.

Together with 11884007, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11884001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5942004 + 5942005.

It is an arithmetic number, because the mean of its divisors is an integer number (5942005).

Almost surely, 2^11884009 is an apocalyptic number.

It is an amenable number.

11884009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11884009 is an equidigital number, since it uses as much as digits as its factorization.

11884009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 11884009 is about 3447.3191033033. The cubic root of 11884009 is about 228.2028114870.

The spelling of 11884009 in words is "eleven million, eight hundred eighty-four thousand, nine".