11416421 has 2 divisors, whose sum is σ = 11416422. Its totient is φ = 11416420.

The previous prime is 11416403. The next prime is 11416423. The reversal of 11416421 is 12461411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6964321 + 4452100 = 2639^2 + 2110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11416421 is a prime.

Together with 11416423, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11416393 and 11416402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11416423) 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, 5708210 + 5708211.

It is an arithmetic number, because the mean of its divisors is an integer number (5708211).

Almost surely, 2^11416421 is an apocalyptic number.

It is an amenable number.

11416421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11416421 is an equidigital number, since it uses as much as digits as its factorization.

11416421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

The square root of 11416421 is about 3378.8194683942. The cubic root of 11416421 is about 225.1697221486.

Adding to 11416421 its reverse (12461411), we get a palindrome (23877832).

The spelling of 11416421 in words is "eleven million, four hundred sixteen thousand, four hundred twenty-one".