2440003221 has 12 divisors (see below), whose sum is σ = 3619704972. Its totient is φ = 1582704576.

The previous prime is 2440003219. The next prime is 2440003271. The reversal of 2440003221 is 1223000442.

2440003221 is a `hidden beast` number, since 2 + 440 + 0 + 0 + 3 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1773588996 + 666414225 = 42114^2 + 25815^2 .

It is not a de Polignac number, because 2440003221 - 2¹ = 2440003219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2440003194 and 2440003203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440003271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3663336 + ... + 3664001.

It is an arithmetic number, because the mean of its divisors is an integer number (301642081).

Almost surely, 2^2440003221 is an apocalyptic number.

It is an amenable number.

2440003221 is a deficient number, since it is larger than the sum of its proper divisors (1179701751).

2440003221 is a wasteful number, since it uses less digits than its factorization.

2440003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327380 (or 7327377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2440003221 is about 49396.3887445226. The cubic root of 2440003221 is about 1346.2636918453.

Adding to 2440003221 its reverse (1223000442), we get a palindrome (3663003663).

The spelling of 2440003221 in words is "two billion, four hundred forty million, three thousand, two hundred twenty-one".