1444644 has 18 divisors (see below), whose sum is σ = 3651830. Its totient is φ = 481536.

The previous prime is 1444633. The next prime is 1444649. The reversal of 1444644 is 4464441.

1444644 is a `hidden beast` number, since 14 + 4 + 4 + 644 = 666.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 656100 = 888^2 + 810^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (1444649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20029 + ... + 20100.

2^1444644 is an apocalyptic number.

It is an amenable number.

1444644 is an abundant number, since it is smaller than the sum of its proper divisors (2207186).

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

1444644 is a wasteful number, since it uses less digits than its factorization.

1444644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40139 (or 40134 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 1444644 is about 1201.9334424168. The cubic root of 1444644 is about 113.0455868486.

The spelling of 1444644 in words is "one million, four hundred forty-four thousand, six hundred forty-four".