324401989 has 2 divisors, whose sum is σ = 324401990. Its totient is φ = 324401988.

The previous prime is 324401983. The next prime is 324402049. The reversal of 324401989 is 989104423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322920900 + 1481089 = 17970^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 324401989 - 2¹¹ = 324399941 is a prime.

It is a super-2 number, since 2×324401989² = 210473300934312242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324401983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162200994 + 162200995.

It is an arithmetic number, because the mean of its divisors is an integer number (162200995).

Almost surely, 2^324401989 is an apocalyptic number.

It is an amenable number.

324401989 is a deficient number, since it is larger than the sum of its proper divisors (1).

324401989 is an equidigital number, since it uses as much as digits as its factorization.

324401989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 324401989 is about 18011.1628997131. The cubic root of 324401989 is about 687.1124790850.

The spelling of 324401989 in words is "three hundred twenty-four million, four hundred one thousand, nine hundred eighty-nine".