6439941 has 6 divisors (see below), whose sum is σ = 9302150. Its totient is φ = 4293288.

The previous prime is 6439933. The next prime is 6439949. The reversal of 6439941 is 1499346.

6439941 is a `hidden beast` number, since 643 + 9 + 9 + 4 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6439933) and next prime (6439949).

It can be written as a sum of positive squares in only one way, i.e., 6395841 + 44100 = 2529^2 + 210^2 .

It is not a de Polignac number, because 6439941 - 2³ = 6439933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6439896 and 6439905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6439949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357766 + ... + 357783.

Almost surely, 2^6439941 is an apocalyptic number.

It is an amenable number.

6439941 is a deficient number, since it is larger than the sum of its proper divisors (2862209).

6439941 is a wasteful number, since it uses less digits than its factorization.

6439941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715555 (or 715552 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6439941 is about 2537.7038834348. The cubic root of 6439941 is about 186.0489812035.

The spelling of 6439941 in words is "six million, four hundred thirty-nine thousand, nine hundred forty-one".