2009393 has 2 divisors, whose sum is σ = 2009394. Its totient is φ = 2009392.

The previous prime is 2009387. The next prime is 2009407. The reversal of 2009393 is 3939002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1682209 + 327184 = 1297^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009393 - 2⁴ = 2009377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009333) 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, 1004696 + 1004697.

It is an arithmetic number, because the mean of its divisors is an integer number (1004697).

2^2009393 is an apocalyptic number.

It is an amenable number.

2009393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009393 is an equidigital number, since it uses as much as digits as its factorization.

2009393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 2009393 is about 1417.5305993170. The cubic root of 2009393 is about 126.1890376528.

The spelling of 2009393 in words is "two million, nine thousand, three hundred ninety-three".