5489640 has 256 divisors, whose sum is σ = 21772800. Its totient is φ = 1216512.

The previous prime is 5489639. The next prime is 5489683. The reversal of 5489640 is 469845.

5489640 is a `hidden beast` number, since 5 + 4 + 8 + 9 + 640 = 666.

It is a super-2 number, since 2×5489640² = 60272294659200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5489595 and 5489604.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 238669 + ... + 238691.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

Almost surely, 2^5489640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5489640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

5489640 is an abundant number, since it is smaller than the sum of its proper divisors (16283160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5489640 is a wasteful number, since it uses less digits than its factorization.

5489640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 63 counting only the distinct ones).

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

The square root of 5489640 is about 2342.9980793846. The cubic root of 5489640 is about 176.4065155629.

The spelling of 5489640 in words is "five million, four hundred eighty-nine thousand, six hundred forty".