12912349 has 4 divisors (see below), whose sum is σ = 13045564. Its totient is φ = 12779136.

The previous prime is 12912331. The next prime is 12912353. The reversal of 12912349 is 94321921.

12912349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94321921 = 61 ⋅1546261.

It can be written as a sum of positive squares in 2 ways, for example, as 4020025 + 8892324 = 2005^2 + 2982^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912349 - 2¹¹ = 12910301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12912349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12912379) 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, 66462 + ... + 66655.

It is an arithmetic number, because the mean of its divisors is an integer number (3261391).

Almost surely, 2^12912349 is an apocalyptic number.

It is an amenable number.

12912349 is a deficient number, since it is larger than the sum of its proper divisors (133215).

12912349 is an equidigital number, since it uses as much as digits as its factorization.

12912349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133214.

The product of its digits is 3888, while the sum is 31.

The square root of 12912349 is about 3593.3757109437. The cubic root of 12912349 is about 234.6038231970.

The spelling of 12912349 in words is "twelve million, nine hundred twelve thousand, three hundred forty-nine".