11474821 has 2 divisors, whose sum is σ = 11474822. Its totient is φ = 11474820.

The previous prime is 11474819. The next prime is 11474849. The reversal of 11474821 is 12847411.

It is an a-pointer prime, because the next prime (11474849) can be obtained adding 11474821 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 617796 = 3295^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 11474821 - 2¹ = 11474819 is a prime.

Together with 11474819, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11474821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11474891) 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 as a sum of consecutive naturals, namely, 5737410 + 5737411.

It is an arithmetic number, because the mean of its divisors is an integer number (5737411).

Almost surely, 2^11474821 is an apocalyptic number.

It is an amenable number.

11474821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11474821 is an equidigital number, since it uses as much as digits as its factorization.

11474821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 28.

The square root of 11474821 is about 3387.4505162437. The cubic root of 11474821 is about 225.5530166084.

The spelling of 11474821 in words is "eleven million, four hundred seventy-four thousand, eight hundred twenty-one".