12399073 has 2 divisors, whose sum is σ = 12399074. Its totient is φ = 12399072.

The previous prime is 12399067. The next prime is 12399089. The reversal of 12399073 is 37099321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 2614689 = 3128^2 + 1617^2 .

It is a cyclic number.

It is not a de Polignac number, because 12399073 - 2⁵ = 12399041 is a prime.

It is a super-2 number, since 2×12399073² = 307474022518658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12399173) 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, 6199536 + 6199537.

It is an arithmetic number, because the mean of its divisors is an integer number (6199537).

Almost surely, 2^12399073 is an apocalyptic number.

It is an amenable number.

12399073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12399073 is an equidigital number, since it uses as much as digits as its factorization.

12399073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 12399073 is about 3521.2317447166. The cubic root of 12399073 is about 231.4531375023.

The spelling of 12399073 in words is "twelve million, three hundred ninety-nine thousand, seventy-three".