6436379 has 2 divisors, whose sum is σ = 6436380. Its totient is φ = 6436378.

The previous prime is 6436361. The next prime is 6436447. The reversal of 6436379 is 9736346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6436379 - 2²⁰ = 5387803 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6436279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218189 + 3218190.

It is an arithmetic number, because the mean of its divisors is an integer number (3218190).

Almost surely, 2^6436379 is an apocalyptic number.

6436379 is a deficient number, since it is larger than the sum of its proper divisors (1).

6436379 is an equidigital number, since it uses as much as digits as its factorization.

6436379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 38.

The square root of 6436379 is about 2537.0019708309. The cubic root of 6436379 is about 186.0146729859.

The spelling of 6436379 in words is "six million, four hundred thirty-six thousand, three hundred seventy-nine".