12400699 has 2 divisors, whose sum is σ = 12400700. Its totient is φ = 12400698.

The previous prime is 12400697. The next prime is 12400721. The reversal of 12400699 is 99600421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99600421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12400699 - 2¹ = 12400697 is a prime.

Together with 12400697, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12400699.

It is not a weakly prime, because it can be changed into another prime (12400691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200349 + 6200350.

It is an arithmetic number, because the mean of its divisors is an integer number (6200350).

Almost surely, 2^12400699 is an apocalyptic number.

12400699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400699 is an equidigital number, since it uses as much as digits as its factorization.

12400699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 12400699 is about 3521.4626222637. The cubic root of 12400699 is about 231.4632545584.

The spelling of 12400699 in words is "twelve million, four hundred thousand, six hundred ninety-nine".