12986951 has 2 divisors, whose sum is σ = 12986952. Its totient is φ = 12986950.

The previous prime is 12986933. The next prime is 12986959. The reversal of 12986951 is 15968921.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15968921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12986951 - 2¹⁸ = 12724807 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12986899 and 12986908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12986959) 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, 6493475 + 6493476.

It is an arithmetic number, because the mean of its divisors is an integer number (6493476).

Almost surely, 2^12986951 is an apocalyptic number.

12986951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12986951 is an equidigital number, since it uses as much as digits as its factorization.

12986951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 41.

The square root of 12986951 is about 3603.7412504230. The cubic root of 12986951 is about 235.0547691871.

The spelling of 12986951 in words is "twelve million, nine hundred eighty-six thousand, nine hundred fifty-one".