5640044 has 12 divisors (see below), whose sum is σ = 9886800. Its totient is φ = 2815248.

The previous prime is 5640043. The next prime is 5640059. The reversal of 5640044 is 4400465.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5640043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3617 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (823900).

Almost surely, 2^5640044 is an apocalyptic number.

It is an amenable number.

5640044 is a deficient number, since it is larger than the sum of its proper divisors (4246756).

5640044 is a wasteful number, since it uses less digits than its factorization.

5640044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 5640044 is about 2374.8776810606. The cubic root of 5640044 is about 178.0030719497.

The spelling of 5640044 in words is "five million, six hundred forty thousand, forty-four".