12905293 has 4 divisors (see below), whose sum is σ = 12912480. Its totient is φ = 12898108.

The previous prime is 12905287. The next prime is 12905311. The reversal of 12905293 is 39250921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39250921 = 149 ⋅263429.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12905293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906293) 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 3 ways as a sum of consecutive naturals, for example, 1698 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 2^12905293 is an apocalyptic number.

It is an amenable number.

12905293 is a deficient number, since it is larger than the sum of its proper divisors (7187).

12905293 is an equidigital number, since it uses as much as digits as its factorization.

12905293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 12905293 is about 3592.3937701761. The cubic root of 12905293 is about 234.5610820403.

The spelling of 12905293 in words is "twelve million, nine hundred five thousand, two hundred ninety-three".