6440941 has 4 divisors (see below), whose sum is σ = 6936412. Its totient is φ = 5945472.

The previous prime is 6440939. The next prime is 6440947. The reversal of 6440941 is 1490446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3164841 + 3276100 = 1779^2 + 1810^2 .

It is not a de Polignac number, because 6440941 - 2¹ = 6440939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247716 + ... + 247741.

It is an arithmetic number, because the mean of its divisors is an integer number (1734103).

Almost surely, 2^6440941 is an apocalyptic number.

It is an amenable number.

6440941 is a deficient number, since it is larger than the sum of its proper divisors (495471).

6440941 is a wasteful number, since it uses less digits than its factorization.

6440941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495470.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6440941 is about 2537.9009042908. The cubic root of 6440941 is about 186.0586106578.

It can be divided in two parts, 6440 and 941, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6440941 in words is "six million, four hundred forty thousand, nine hundred forty-one".