2219944 has 8 divisors (see below), whose sum is σ = 4162410. Its totient is φ = 1109968.

The previous prime is 2219939. The next prime is 2219947. The reversal of 2219944 is 4499122.

It is a happy number.

2219944 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2067844 + 152100 = 1438^2 + 390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2219947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138739 + ... + 138754.

2^2219944 is an apocalyptic number.

It is an amenable number.

2219944 is a deficient number, since it is larger than the sum of its proper divisors (1942466).

2219944 is a wasteful number, since it uses less digits than its factorization.

2219944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277499 (or 277495 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 2219944 is about 1489.9476500871. The cubic root of 2219944 is about 130.4509780985.

The spelling of 2219944 in words is "two million, two hundred nineteen thousand, nine hundred forty-four".