12419989 has 2 divisors, whose sum is σ = 12419990. Its totient is φ = 12419988.

The previous prime is 12419983. The next prime is 12420011. The reversal of 12419989 is 98991421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 3359889 = 3010^2 + 1833^2 .

It is a cyclic number.

It is not a de Polignac number, because 12419989 - 2¹⁷ = 12288917 is a prime.

It is a super-2 number, since 2×12419989² = 308512253520242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12419983) 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, 6209994 + 6209995.

It is an arithmetic number, because the mean of its divisors is an integer number (6209995).

Almost surely, 2^12419989 is an apocalyptic number.

It is an amenable number.

12419989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12419989 is an equidigital number, since it uses as much as digits as its factorization.

12419989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 12419989 is about 3524.2004767039. The cubic root of 12419989 is about 231.5832105122.

The spelling of 12419989 in words is "twelve million, four hundred nineteen thousand, nine hundred eighty-nine".