1244644 has 12 divisors (see below), whose sum is σ = 2214268. Its totient is φ = 612000.

The previous prime is 1244629. The next prime is 1244647. The reversal of 1244644 is 4464421.

It can be written as a sum of positive squares in 2 ways, for example, as 12544 + 1232100 = 112^2 + 1110^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307 + ... + 2794.

2^1244644 is an apocalyptic number.

It is an amenable number.

1244644 is a deficient number, since it is larger than the sum of its proper divisors (969624).

1244644 is a wasteful number, since it uses less digits than its factorization.

1244644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166 (or 5164 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 1244644 is about 1115.6361414009. The cubic root of 1244644 is about 107.5676588679.

The spelling of 1244644 in words is "one million, two hundred forty-four thousand, six hundred forty-four".