12899951 has 2 divisors, whose sum is σ = 12899952. Its totient is φ = 12899950.

The previous prime is 12899899. The next prime is 12899959. The reversal of 12899951 is 15999821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15999821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12899951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12899959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6449975 + 6449976.

It is an arithmetic number, because the mean of its divisors is an integer number (6449976).

Almost surely, 2^12899951 is an apocalyptic number.

12899951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12899951 is an equidigital number, since it uses as much as digits as its factorization.

12899951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 44.

The square root of 12899951 is about 3591.6501778430. The cubic root of 12899951 is about 234.5287129384.

The spelling of 12899951 in words is "twelve million, eight hundred ninety-nine thousand, nine hundred fifty-one".