12849649 has 2 divisors, whose sum is σ = 12849650. Its totient is φ = 12849648.

The previous prime is 12849623. The next prime is 12849653. The reversal of 12849649 is 94694821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12730624 + 119025 = 3568^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 12849649 - 2¹⁷ = 12718577 is a prime.

It is a super-2 number, since 2×12849649² = 330226958846402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12849449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6424824 + 6424825.

It is an arithmetic number, because the mean of its divisors is an integer number (6424825).

Almost surely, 2^12849649 is an apocalyptic number.

It is an amenable number.

12849649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12849649 is an equidigital number, since it uses as much as digits as its factorization.

12849649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 12849649 is about 3584.6407072397. The cubic root of 12849649 is about 234.2234758440.

The spelling of 12849649 in words is "twelve million, eight hundred forty-nine thousand, six hundred forty-nine".