12019993 has 2 divisors, whose sum is σ = 12019994. Its totient is φ = 12019992.

The previous prime is 12019957. The next prime is 12020051. The reversal of 12019993 is 39991021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6697744 + 5322249 = 2588^2 + 2307^2 .

It is a cyclic number.

It is not a de Polignac number, because 12019993 - 2⁹ = 12019481 is a prime.

It is not a weakly prime, because it can be changed into another prime (12019933) 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, 6009996 + 6009997.

It is an arithmetic number, because the mean of its divisors is an integer number (6009997).

Almost surely, 2^12019993 is an apocalyptic number.

It is an amenable number.

12019993 is a deficient number, since it is larger than the sum of its proper divisors (1).

12019993 is an equidigital number, since it uses as much as digits as its factorization.

12019993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 12019993 is about 3466.9861551497. The cubic root of 12019993 is about 229.0699239188.

The spelling of 12019993 in words is "twelve million, nineteen thousand, nine hundred ninety-three".