12269989 has 2 divisors, whose sum is σ = 12269990. Its totient is φ = 12269988.

The previous prime is 12269981. The next prime is 12270047. The reversal of 12269989 is 98996221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 2125764 = 3185^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 12269989 - 2³ = 12269981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12269981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6134994 + 6134995.

It is an arithmetic number, because the mean of its divisors is an integer number (6134995).

Almost surely, 2^12269989 is an apocalyptic number.

It is an amenable number.

12269989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12269989 is an equidigital number, since it uses as much as digits as its factorization.

12269989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 12269989 is about 3502.8544074797. The cubic root of 12269989 is about 230.6471315145.

The spelling of 12269989 in words is "twelve million, two hundred sixty-nine thousand, nine hundred eighty-nine".