19340209 has 8 divisors (see below), whose sum is σ = 22148288. Its totient is φ = 16543440.

The previous prime is 19340183. The next prime is 19340219. The reversal of 19340209 is 90204391.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19340209 - 2¹³ = 19332017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19340219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 6340.

It is an arithmetic number, because the mean of its divisors is an integer number (2768536).

Almost surely, 2^19340209 is an apocalyptic number.

It is an amenable number.

19340209 is a deficient number, since it is larger than the sum of its proper divisors (2808079).

19340209 is an equidigital number, since it uses as much as digits as its factorization.

19340209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 19340209 is about 4397.7504476721. The cubic root of 19340209 is about 268.4234090130.

The spelling of 19340209 in words is "nineteen million, three hundred forty thousand, two hundred nine".