1040440221 has 48 divisors (see below), whose sum is σ = 1622799360. Its totient is φ = 665340480.

The previous prime is 1040440189. The next prime is 1040440241. The reversal of 1040440221 is 1220440401.

1040440221 is a `hidden beast` number, since 1 + 0 + 4 + 0 + 440 + 221 = 666.

It is not a de Polignac number, because 1040440221 - 2⁵ = 1040440189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1040440194 and 1040440203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040440241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1345591 + ... + 1346363.

It is an arithmetic number, because the mean of its divisors is an integer number (33808320).

Almost surely, 2^1040440221 is an apocalyptic number.

It is an amenable number.

1040440221 is a deficient number, since it is larger than the sum of its proper divisors (582359139).

1040440221 is an equidigital number, since it uses as much as digits as its factorization.

1040440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1040440221 is about 32255.8556079357. The cubic root of 1040440221 is about 1013.3023368746.

Adding to 1040440221 its reverse (1220440401), we get a palindrome (2260880622).

It can be divided in two parts, 10404 and 40221, that added together give a 4-th power (50625 = 15⁴).

The spelling of 1040440221 in words is "one billion, forty million, four hundred forty thousand, two hundred twenty-one".