12929291 has 4 divisors (see below), whose sum is σ = 13609800. Its totient is φ = 12248784.

The previous prime is 12929251. The next prime is 12929303. The reversal of 12929291 is 19292921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19292921 = 4243 ⋅4547.

It is a cyclic number.

It is not a de Polignac number, because 12929291 - 2¹⁸ = 12667147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12929221) 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, 340226 + ... + 340263.

It is an arithmetic number, because the mean of its divisors is an integer number (3402450).

Almost surely, 2^12929291 is an apocalyptic number.

12929291 is a deficient number, since it is larger than the sum of its proper divisors (680509).

12929291 is an equidigital number, since it uses as much as digits as its factorization.

12929291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680508.

The product of its digits is 5832, while the sum is 35.

The square root of 12929291 is about 3595.7323315286. The cubic root of 12929291 is about 234.7063844708.

It can be divided in two parts, 1 and 2929291, that added together give a palindrome (2929292).

The spelling of 12929291 in words is "twelve million, nine hundred twenty-nine thousand, two hundred ninety-one".