12912293 has 2 divisors, whose sum is σ = 12912294. Its totient is φ = 12912292.

The previous prime is 12912287. The next prime is 12912301. The reversal of 12912293 is 39221921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11957764 + 954529 = 3458^2 + 977^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912293 - 2⁸ = 12912037 is a prime.

It is equal to p₈₄₃₉₃₂ and since 12912293 and 843932 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12912203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456146 + 6456147.

It is an arithmetic number, because the mean of its divisors is an integer number (6456147).

Almost surely, 2^12912293 is an apocalyptic number.

It is an amenable number.

12912293 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912293 is an equidigital number, since it uses as much as digits as its factorization.

12912293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 12912293 is about 3593.3679188193. The cubic root of 12912293 is about 234.6034840428.

The spelling of 12912293 in words is "twelve million, nine hundred twelve thousand, two hundred ninety-three".