12929293 has 4 divisors (see below), whose sum is σ = 13923868. Its totient is φ = 11934720.

The previous prime is 12929251. The next prime is 12929303. The reversal of 12929293 is 39292921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6985449 + 5943844 = 2643^2 + 2438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12929293 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 (12929233) 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, 497268 + ... + 497293.

It is an arithmetic number, because the mean of its divisors is an integer number (3480967).

Almost surely, 2^12929293 is an apocalyptic number.

12929293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12929293 is a deficient number, since it is larger than the sum of its proper divisors (994575).

12929293 is an equidigital number, since it uses as much as digits as its factorization.

12929293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994574.

The product of its digits is 17496, while the sum is 37.

The square root of 12929293 is about 3595.7326096360. The cubic root of 12929293 is about 234.7063965729.

It can be divided in two parts, 1292 and 9293, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 12929293 in words is "twelve million, nine hundred twenty-nine thousand, two hundred ninety-three".