6693439 has 2 divisors, whose sum is σ = 6693440. Its totient is φ = 6693438.

The previous prime is 6693431. The next prime is 6693451. The reversal of 6693439 is 9343966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6693439 - 2³ = 6693431 is a prime.

6693439 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6693431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3346719 + 3346720.

It is an arithmetic number, because the mean of its divisors is an integer number (3346720).

Almost surely, 2^6693439 is an apocalyptic number.

6693439 is a deficient number, since it is larger than the sum of its proper divisors (1).

6693439 is an equidigital number, since it uses as much as digits as its factorization.

6693439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 40.

The square root of 6693439 is about 2587.1681429702. The cubic root of 6693439 is about 188.4588065816.

The spelling of 6693439 in words is "six million, six hundred ninety-three thousand, four hundred thirty-nine".