11634421 has 2 divisors, whose sum is σ = 11634422. Its totient is φ = 11634420.

The previous prime is 11634407. The next prime is 11634433. The reversal of 11634421 is 12443611.

11634421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7349521 + 4284900 = 2711^2 + 2070^2 .

It is an emirp because it is prime and its reverse (12443611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11634421 - 2¹⁹ = 11110133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11634392 and 11634401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11634461) 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, 5817210 + 5817211.

It is an arithmetic number, because the mean of its divisors is an integer number (5817211).

Almost surely, 2^11634421 is an apocalyptic number.

It is an amenable number.

11634421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11634421 is an equidigital number, since it uses as much as digits as its factorization.

11634421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 11634421 is about 3410.9267069229. The cubic root of 11634421 is about 226.5939229757.

The spelling of 11634421 in words is "eleven million, six hundred thirty-four thousand, four hundred twenty-one".