12401399 has 2 divisors, whose sum is σ = 12401400. Its totient is φ = 12401398.

The previous prime is 12401369. The next prime is 12401429. The reversal of 12401399 is 99310421.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12401369) and next prime (12401429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12401399 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 (12401309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200699 + 6200700.

It is an arithmetic number, because the mean of its divisors is an integer number (6200700).

Almost surely, 2^12401399 is an apocalyptic number.

12401399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401399 is an equidigital number, since it uses as much as digits as its factorization.

12401399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12401399 is about 3521.5620113807. The cubic root of 12401399 is about 231.4676097223.

The spelling of 12401399 in words is "twelve million, four hundred one thousand, three hundred ninety-nine".