1330393 has 2 divisors, whose sum is σ = 1330394. Its totient is φ = 1330392.

The previous prime is 1330337. The next prime is 1330397. The reversal of 1330393 is 3930331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 685584 + 644809 = 828^2 + 803^2 .

It is an emirp because it is prime and its reverse (3930331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1330393 is a prime.

1330393 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1330397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665196 + 665197.

It is an arithmetic number, because the mean of its divisors is an integer number (665197).

2^1330393 is an apocalyptic number.

It is an amenable number.

1330393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330393 is an equidigital number, since it uses as much as digits as its factorization.

1330393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 22.

The square root of 1330393 is about 1153.4266339911. The cubic root of 1330393 is about 109.9832756943.

The spelling of 1330393 in words is "one million, three hundred thirty thousand, three hundred ninety-three".