6394321 has 2 divisors, whose sum is σ = 6394322. Its totient is φ = 6394320.

The previous prime is 6394313. The next prime is 6394357. The reversal of 6394321 is 1234936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6076225 + 318096 = 2465^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 6394321 - 2³ = 6394313 is a prime.

6394321 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6394321.

It is not a weakly prime, because it can be changed into another prime (6394121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197160 + 3197161.

It is an arithmetic number, because the mean of its divisors is an integer number (3197161).

Almost surely, 2^6394321 is an apocalyptic number.

It is an amenable number.

6394321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6394321 is an equidigital number, since it uses as much as digits as its factorization.

6394321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 6394321 is about 2528.6994681061. The cubic root of 6394321 is about 185.6086212955.

The spelling of 6394321 in words is "six million, three hundred ninety-four thousand, three hundred twenty-one".