19396009 has 2 divisors, whose sum is σ = 19396010. Its totient is φ = 19396008.

The previous prime is 19395989. The next prime is 19396043. The reversal of 19396009 is 90069391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 6051600 = 3653^2 + 2460^2 .

It is a cyclic number.

It is not a de Polignac number, because 19396009 - 2⁵ = 19395977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11396009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9698004 + 9698005.

It is an arithmetic number, because the mean of its divisors is an integer number (9698005).

Almost surely, 2^19396009 is an apocalyptic number.

It is an amenable number.

19396009 is a deficient number, since it is larger than the sum of its proper divisors (1).

19396009 is an equidigital number, since it uses as much as digits as its factorization.

19396009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 19396009 is about 4404.0900308690. The cubic root of 19396009 is about 268.6813111638.

The spelling of 19396009 in words is "nineteen million, three hundred ninety-six thousand, nine".