324320989 has 2 divisors, whose sum is σ = 324320990. Its totient is φ = 324320988.

The previous prime is 324320987. The next prime is 324321061. The reversal of 324320989 is 989023423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173448900 + 150872089 = 13170^2 + 12283^2 .

It is a cyclic number.

It is not a de Polignac number, because 324320989 - 2¹ = 324320987 is a prime.

Together with 324320987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324320987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162160494 + 162160495.

It is an arithmetic number, because the mean of its divisors is an integer number (162160495).

Almost surely, 2^324320989 is an apocalyptic number.

It is an amenable number.

324320989 is a deficient number, since it is larger than the sum of its proper divisors (1).

324320989 is an equidigital number, since it uses as much as digits as its factorization.

324320989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 324320989 is about 18008.9141538295. The cubic root of 324320989 is about 687.0552859053.

The spelling of 324320989 in words is "three hundred twenty-four million, three hundred twenty thousand, nine hundred eighty-nine".