5438644 has 6 divisors (see below), whose sum is σ = 9517634. Its totient is φ = 2719320.

The previous prime is 5438639. The next prime is 5438651. The reversal of 5438644 is 4468345.

It can be written as a sum of positive squares in only one way, i.e., 2755600 + 2683044 = 1660^2 + 1638^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 679827 + ... + 679834.

Almost surely, 2^5438644 is an apocalyptic number.

It is an amenable number.

5438644 is a deficient number, since it is larger than the sum of its proper divisors (4078990).

5438644 is a wasteful number, since it uses less digits than its factorization.

5438644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359665 (or 1359663 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 5438644 is about 2332.0900497193. The cubic root of 5438644 is about 175.8585726793.

Subtracting from 5438644 its reverse (4468345), we obtain a cube (970299 = 99³).

The spelling of 5438644 in words is "five million, four hundred thirty-eight thousand, six hundred forty-four".