12422989 has 2 divisors, whose sum is σ = 12422990. Its totient is φ = 12422988.

The previous prime is 12422953. The next prime is 12422999. The reversal of 12422989 is 98922421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 3392964 = 3005^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 12422989 - 2¹³ = 12414797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12422929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211494 + 6211495.

It is an arithmetic number, because the mean of its divisors is an integer number (6211495).

Almost surely, 2^12422989 is an apocalyptic number.

It is an amenable number.

12422989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12422989 is an equidigital number, since it uses as much as digits as its factorization.

12422989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 12422989 is about 3524.6260794586. The cubic root of 12422989 is about 231.6018550188.

The spelling of 12422989 in words is "twelve million, four hundred twenty-two thousand, nine hundred eighty-nine".