324087989 has 2 divisors, whose sum is σ = 324087990. Its totient is φ = 324087988.

The previous prime is 324087979. The next prime is 324087991. The reversal of 324087989 is 989780423.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180687364 + 143400625 = 13442^2 + 11975^2 .

It is a cyclic number.

It is not a de Polignac number, because 324087989 - 2¹⁶ = 324022453 is a prime.

It is a super-2 number, since 2×324087989² = 210066049228128242, which contains 22 as substring.

Together with 324087991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324087979) 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, 162043994 + 162043995.

It is an arithmetic number, because the mean of its divisors is an integer number (162043995).

Almost surely, 2^324087989 is an apocalyptic number.

It is an amenable number.

324087989 is a deficient number, since it is larger than the sum of its proper divisors (1).

324087989 is an equidigital number, since it uses as much as digits as its factorization.

324087989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 324087989 is about 18002.4439729721. The cubic root of 324087989 is about 686.8907141401.

The spelling of 324087989 in words is "three hundred twenty-four million, eighty-seven thousand, nine hundred eighty-nine".