12897349 has 6 divisors (see below), whose sum is σ = 13256754. Its totient is φ = 12547440.

The previous prime is 12897337. The next prime is 12897359. The reversal of 12897349 is 94379821.

It can be written as a sum of positive squares in 3 ways, for example, as 6100900 + 6796449 = 2470^2 + 2607^2 .

It is not a de Polignac number, because 12897349 - 2¹¹ = 12895301 is a prime.

It is a super-2 number, since 2×12897349² = 332683222455602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3342 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (2209459).

Almost surely, 2^12897349 is an apocalyptic number.

It is an amenable number.

12897349 is a deficient number, since it is larger than the sum of its proper divisors (359405).

12897349 is an frugal number, since it uses more digits than its factorization.

12897349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9495 (or 9458 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 12897349 is about 3591.2879305341. The cubic root of 12897349 is about 234.5129432469.

The spelling of 12897349 in words is "twelve million, eight hundred ninety-seven thousand, three hundred forty-nine".