2009129393 has 2 divisors, whose sum is σ = 2009129394. Its totient is φ = 2009129392.

The previous prime is 2009129371. The next prime is 2009129399. The reversal of 2009129393 is 3939219002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2008115344 + 1014049 = 44812^2 + 1007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009129393 - 2⁸ = 2009129137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2009129399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004564696 + 1004564697.

It is an arithmetic number, because the mean of its divisors is an integer number (1004564697).

Almost surely, 2^2009129393 is an apocalyptic number.

It is an amenable number.

2009129393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009129393 is an equidigital number, since it uses as much as digits as its factorization.

2009129393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 2009129393 is about 44823.3130524730. The cubic root of 2009129393 is about 1261.8351927510.

The spelling of 2009129393 in words is "two billion, nine million, one hundred twenty-nine thousand, three hundred ninety-three".