6439049 has 2 divisors, whose sum is σ = 6439050. Its totient is φ = 6439048.

The previous prime is 6439033. The next prime is 6439051. The reversal of 6439049 is 9409346.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5555449 + 883600 = 2357^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 6439049 - 2⁴ = 6439033 is a prime.

It is a super-2 number, since 2×6439049² = 82922704048802, which contains 22 as substring.

Together with 6439051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another 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 as a sum of consecutive naturals, namely, 3219524 + 3219525.

It is an arithmetic number, because the mean of its divisors is an integer number (3219525).

Almost surely, 2^6439049 is an apocalyptic number.

It is an amenable number.

6439049 is a deficient number, since it is larger than the sum of its proper divisors (1).

6439049 is an equidigital number, since it uses as much as digits as its factorization.

6439049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6439049 is about 2537.5281279229. The cubic root of 6439049 is about 186.0403908891.

The spelling of 6439049 in words is "six million, four hundred thirty-nine thousand, forty-nine".