11944421 has 4 divisors (see below), whose sum is σ = 12647052. Its totient is φ = 11241792.

The previous prime is 11944417. The next prime is 11944441. The reversal of 11944421 is 12444911.

11944421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9541921 + 2402500 = 3089^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 11944421 - 2² = 11944417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11944441) 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, 351290 + ... + 351323.

It is an arithmetic number, because the mean of its divisors is an integer number (3161763).

Almost surely, 2^11944421 is an apocalyptic number.

It is an amenable number.

11944421 is a deficient number, since it is larger than the sum of its proper divisors (702631).

11944421 is an equidigital number, since it uses as much as digits as its factorization.

11944421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702630.

The product of its digits is 1152, while the sum is 26.

The square root of 11944421 is about 3456.0701671118. The cubic root of 11944421 is about 228.5888454548.

The spelling of 11944421 in words is "eleven million, nine hundred forty-four thousand, four hundred twenty-one".