12499901 has 2 divisors, whose sum is σ = 12499902. Its totient is φ = 12499900.

The previous prime is 12499897. The next prime is 12499909. The reversal of 12499901 is 10999421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6497401 + 6002500 = 2549^2 + 2450^2 .

It is a cyclic number.

It is not a de Polignac number, because 12499901 - 2² = 12499897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12499909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6249950 + 6249951.

It is an arithmetic number, because the mean of its divisors is an integer number (6249951).

Almost surely, 2^12499901 is an apocalyptic number.

It is an amenable number.

12499901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12499901 is an equidigital number, since it uses as much as digits as its factorization.

12499901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 12499901 is about 3535.5199051907. The cubic root of 12499901 is about 232.0788289893.

The spelling of 12499901 in words is "twelve million, four hundred ninety-nine thousand, nine hundred one".