12219444 has 24 divisors (see below), whose sum is σ = 31680320. Its totient is φ = 4073112.

The previous prime is 12219443. The next prime is 12219461. The reversal of 12219444 is 44491221.

It is a happy number.

12219444 is a `hidden beast` number, since 1 + 2 + 219 + 444 = 666.

12219444 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56464 + ... + 56679.

Almost surely, 2^12219444 is an apocalyptic number.

It is an amenable number.

12219444 is an abundant number, since it is smaller than the sum of its proper divisors (19460876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12219444 is a wasteful number, since it uses less digits than its factorization.

12219444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113156 (or 113148 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12219444 is about 3495.6321316752. The cubic root of 12219444 is about 230.3299863220.

The spelling of 12219444 in words is "twelve million, two hundred nineteen thousand, four hundred forty-four".