6439313 has 2 divisors, whose sum is σ = 6439314. Its totient is φ = 6439312.

The previous prime is 6439291. The next prime is 6439327. The reversal of 6439313 is 3139346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6235009 + 204304 = 2497^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 6439313 - 2¹⁴ = 6422929 is a prime.

It is not a weakly prime, because it can be changed into another prime (6439513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219656 + 3219657.

It is an arithmetic number, because the mean of its divisors is an integer number (3219657).

Almost surely, 2^6439313 is an apocalyptic number.

It is an amenable number.

6439313 is a deficient number, since it is larger than the sum of its proper divisors (1).

6439313 is an equidigital number, since it uses as much as digits as its factorization.

6439313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 29.

The square root of 6439313 is about 2537.5801465175. The cubic root of 6439313 is about 186.0429333967.

The spelling of 6439313 in words is "six million, four hundred thirty-nine thousand, three hundred thirteen".