11816447 has 2 divisors, whose sum is σ = 11816448. Its totient is φ = 11816446.

The previous prime is 11816417. The next prime is 11816449. The reversal of 11816447 is 74461811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11816447 - 2²² = 7622143 is a prime.

Together with 11816449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11816449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5908223 + 5908224.

It is an arithmetic number, because the mean of its divisors is an integer number (5908224).

Almost surely, 2^11816447 is an apocalyptic number.

11816447 is a deficient number, since it is larger than the sum of its proper divisors (1).

11816447 is an equidigital number, since it uses as much as digits as its factorization.

11816447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 11816447 is about 3437.5059272676. The cubic root of 11816447 is about 227.7695360272.

The spelling of 11816447 in words is "eleven million, eight hundred sixteen thousand, four hundred forty-seven".