11784427 has 4 divisors (see below), whose sum is σ = 12404680. Its totient is φ = 11164176.

The previous prime is 11784419. The next prime is 11784439. The reversal of 11784427 is 72448711.

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

It is a cyclic number.

It is not a de Polignac number, because 11784427 - 2³ = 11784419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11784392 and 11784401.

It is not an unprimeable number, because it can be changed into a prime (11784727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310098 + ... + 310135.

It is an arithmetic number, because the mean of its divisors is an integer number (3101170).

Almost surely, 2^11784427 is an apocalyptic number.

11784427 is a deficient number, since it is larger than the sum of its proper divisors (620253).

11784427 is an equidigital number, since it uses as much as digits as its factorization.

11784427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620252.

The product of its digits is 12544, while the sum is 34.

The square root of 11784427 is about 3432.8453213042. The cubic root of 11784427 is about 227.5636146217.

The spelling of 11784427 in words is "eleven million, seven hundred eighty-four thousand, four hundred twenty-seven".