6440241 has 12 divisors (see below), whose sum is σ = 8764112. Its totient is φ = 4205784.

The previous prime is 6440201. The next prime is 6440249. The reversal of 6440241 is 1420446.

It is not a de Polignac number, because 6440241 - 2⁶ = 6440177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6440249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35890 + ... + 36068.

Almost surely, 2^6440241 is an apocalyptic number.

It is an amenable number.

6440241 is a deficient number, since it is larger than the sum of its proper divisors (2323871).

6440241 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (6440240) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (249).

6440241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 6440241 is about 2537.7629912977. The cubic root of 6440241 is about 186.0518701445.

Adding to 6440241 its reverse (1420446), we get a palindrome (7860687).

The spelling of 6440241 in words is "six million, four hundred forty thousand, two hundred forty-one".