12293989 has 2 divisors, whose sum is σ = 12293990. Its totient is φ = 12293988.

The previous prime is 12293971. The next prime is 12293993. The reversal of 12293989 is 98939221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6461764 + 5832225 = 2542^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 12293989 - 2¹¹ = 12291941 is a prime.

It is a super-2 number, since 2×12293989² = 302284331064242, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12293909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6146994 + 6146995.

It is an arithmetic number, because the mean of its divisors is an integer number (6146995).

Almost surely, 2^12293989 is an apocalyptic number.

It is an amenable number.

12293989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12293989 is an equidigital number, since it uses as much as digits as its factorization.

12293989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 12293989 is about 3506.2785114705. The cubic root of 12293989 is about 230.7974148853.

The spelling of 12293989 in words is "twelve million, two hundred ninety-three thousand, nine hundred eighty-nine".