324239989 has 2 divisors, whose sum is σ = 324239990. Its totient is φ = 324239988.

The previous prime is 324239969. The next prime is 324240029. The reversal of 324239989 is 989932423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287879089 + 36360900 = 16967^2 + 6030^2 .

It is a cyclic number.

It is not a de Polignac number, because 324239989 - 2⁹ = 324239477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324239969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162119994 + 162119995.

It is an arithmetic number, because the mean of its divisors is an integer number (162119995).

Almost surely, 2^324239989 is an apocalyptic number.

It is an amenable number.

324239989 is a deficient number, since it is larger than the sum of its proper divisors (1).

324239989 is an equidigital number, since it uses as much as digits as its factorization.

324239989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 324239989 is about 18006.6651271133. The cubic root of 324239989 is about 686.9980832021.

The spelling of 324239989 in words is "three hundred twenty-four million, two hundred thirty-nine thousand, nine hundred eighty-nine".