11814421 has 4 divisors (see below), whose sum is σ = 11826892. Its totient is φ = 11801952.

The previous prime is 11814353. The next prime is 11814427. The reversal of 11814421 is 12441811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12441811 = 1277 ⋅9743.

It can be written as a sum of positive squares in 2 ways, for example, as 8151025 + 3663396 = 2855^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11814421 - 2¹⁹ = 11290133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11814392 and 11814401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11814427) 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, 4686 + ... + 6751.

It is an arithmetic number, because the mean of its divisors is an integer number (2956723).

Almost surely, 2^11814421 is an apocalyptic number.

It is an amenable number.

11814421 is a deficient number, since it is larger than the sum of its proper divisors (12471).

11814421 is a wasteful number, since it uses less digits than its factorization.

11814421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470.

The product of its digits is 256, while the sum is 22.

The square root of 11814421 is about 3437.2112242340. The cubic root of 11814421 is about 227.7565178033.

The spelling of 11814421 in words is "eleven million, eight hundred fourteen thousand, four hundred twenty-one".