12908319 has 4 divisors (see below), whose sum is σ = 17211096. Its totient is φ = 8605544.

The previous prime is 12908279. The next prime is 12908323. The reversal of 12908319 is 91380921.

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

It is a cyclic number.

It is not a de Polignac number, because 12908319 - 2¹² = 12904223 is a prime.

It is a super-2 number, since 2×12908319² = 333249398811522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12908319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12904319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151384 + ... + 2151389.

It is an arithmetic number, because the mean of its divisors is an integer number (4302774).

Almost surely, 2^12908319 is an apocalyptic number.

12908319 is a deficient number, since it is larger than the sum of its proper divisors (4302777).

12908319 is an equidigital number, since it uses as much as digits as its factorization.

12908319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302776.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 12908319 is about 3592.8149131287. The cubic root of 12908319 is about 234.5794137012.

The spelling of 12908319 in words is "twelve million, nine hundred eight thousand, three hundred nineteen".