5640489 has 8 divisors (see below), whose sum is σ = 8356320. Its totient is φ = 3760308.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640489 is 9840465.

5640489 is a `hidden beast` number, since 5 + 640 + 4 + 8 + 9 = 666.

It is not a de Polignac number, because 5640489 - 2⁵ = 5640457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5640409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104427 + ... + 104480.

It is an arithmetic number, because the mean of its divisors is an integer number (1044540).

Almost surely, 2^5640489 is an apocalyptic number.

It is an amenable number.

5640489 is a deficient number, since it is larger than the sum of its proper divisors (2715831).

5640489 is a wasteful number, since it uses less digits than its factorization.

5640489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208916 (or 208910 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5640489 is about 2374.9713682485. The cubic root of 5640489 is about 178.0077533129.

The spelling of 5640489 in words is "five million, six hundred forty thousand, four hundred eighty-nine".