5440000 has 100 divisors (see below), whose sum is σ = 14381334. Its totient is φ = 2048000.

The previous prime is 5439997. The next prime is 5440007. The reversal of 5440000 is 445.

It can be written as a sum of positive squares in 5 ways, for example, as 350464 + 5089536 = 592^2 + 2256^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5440007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 319992 + ... + 320008.

Almost surely, 2^5440000 is an apocalyptic number.

5440000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7190667).

5440000 is an abundant number, since it is smaller than the sum of its proper divisors (8941334).

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

5440000 is an frugal number, since it uses more digits than its factorization.

5440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 5440000 is about 2332.3807579381. The cubic root of 5440000 is about 175.8731868863.

Adding to 5440000 its reverse (445), we get a palindrome (5440445).

The spelling of 5440000 in words is "five million, four hundred forty thousand".