12279901 has 2 divisors, whose sum is σ = 12279902. Its totient is φ = 12279900.

The previous prime is 12279889. The next prime is 12279919. The reversal of 12279901 is 10997221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8259876 + 4020025 = 2874^2 + 2005^2 .

It is an emirp because it is prime and its reverse (10997221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12279901 - 2¹³ = 12271709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12279991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6139950 + 6139951.

It is an arithmetic number, because the mean of its divisors is an integer number (6139951).

Almost surely, 2^12279901 is an apocalyptic number.

It is an amenable number.

12279901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12279901 is an equidigital number, since it uses as much as digits as its factorization.

12279901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12279901 is about 3504.2689679875. The cubic root of 12279901 is about 230.7092222801.

The spelling of 12279901 in words is "twelve million, two hundred seventy-nine thousand, nine hundred one".