12009319 has 4 divisors (see below), whose sum is σ = 13724944. Its totient is φ = 10293696.

The previous prime is 12009233. The next prime is 12009329. The reversal of 12009319 is 91390021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12009319 - 2¹⁷ = 11878247 is a prime.

It is a super-2 number, since 2×12009319² = 288447485687522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12009293 and 12009302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857802 + ... + 857815.

It is an arithmetic number, because the mean of its divisors is an integer number (3431236).

Almost surely, 2^12009319 is an apocalyptic number.

12009319 is a deficient number, since it is larger than the sum of its proper divisors (1715625).

12009319 is an equidigital number, since it uses as much as digits as its factorization.

12009319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715624.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 12009319 is about 3465.4464358867. The cubic root of 12009319 is about 229.0020975762.

The spelling of 12009319 in words is "twelve million, nine thousand, three hundred nineteen".