12899437 has 2 divisors, whose sum is σ = 12899438. Its totient is φ = 12899436.

The previous prime is 12899431. The next prime is 12899449. The reversal of 12899437 is 73499821.

12899437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 5248681 = 2766^2 + 2291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12899437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12899393 and 12899402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12899431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6449718 + 6449719.

It is an arithmetic number, because the mean of its divisors is an integer number (6449719).

Almost surely, 2^12899437 is an apocalyptic number.

It is an amenable number.

12899437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12899437 is an equidigital number, since it uses as much as digits as its factorization.

12899437 is an evil number, because the sum of its binary digits is even.

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

The square root of 12899437 is about 3591.5786222774. The cubic root of 12899437 is about 234.5255979561.

The spelling of 12899437 in words is "twelve million, eight hundred ninety-nine thousand, four hundred thirty-seven".