12436993 has 2 divisors, whose sum is σ = 12436994. Its totient is φ = 12436992.

The previous prime is 12436987. The next prime is 12437011. The reversal of 12436993 is 39963421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9314704 + 3122289 = 3052^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 12436993 - 2¹⁷ = 12305921 is a prime.

It is equal to p₈₁₄₈₇₉ and since 12436993 and 814879 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12436913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6218496 + 6218497.

It is an arithmetic number, because the mean of its divisors is an integer number (6218497).

Almost surely, 2^12436993 is an apocalyptic number.

It is an amenable number.

12436993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12436993 is an equidigital number, since it uses as much as digits as its factorization.

12436993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 12436993 is about 3526.6121136297. The cubic root of 12436993 is about 231.6888478897.

The spelling of 12436993 in words is "twelve million, four hundred thirty-six thousand, nine hundred ninety-three".