4000544 has 12 divisors (see below), whose sum is σ = 7876134. Its totient is φ = 2000256.

The previous prime is 4000543. The next prime is 4000553. The reversal of 4000544 is 4450004.

It can be written as a sum of positive squares in only one way, i.e., 3952144 + 48400 = 1988^2 + 220^2 .

It is not an unprimeable number, because it can be changed into a prime (4000541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62477 + ... + 62540.

Almost surely, 2^4000544 is an apocalyptic number.

It is an amenable number.

4000544 is a deficient number, since it is larger than the sum of its proper divisors (3875590).

4000544 is a wasteful number, since it uses less digits than its factorization.

4000544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125027 (or 125019 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4000544 is about 2000.1359953763. The cubic root of 4000544 is about 158.7473010887.

Adding to 4000544 its reverse (4450004), we get a palindrome (8450548).

The spelling of 4000544 in words is "four million, five hundred forty-four", and thus it is an aban number.