324390989 has 8 divisors (see below), whose sum is σ = 352947000. Its totient is φ = 296349696.

The previous prime is 324390973. The next prime is 324391003. The reversal of 324390989 is 989093423.

It can be written as a sum of positive squares in 4 ways, for example, as 4338889 + 320052100 = 2083^2 + 17890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 324390989 - 2⁴ = 324390973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324390949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127364 + ... + 129885.

It is an arithmetic number, because the mean of its divisors is an integer number (44118375).

Almost surely, 2^324390989 is an apocalyptic number.

It is an amenable number.

324390989 is a deficient number, since it is larger than the sum of its proper divisors (28556011).

324390989 is a wasteful number, since it uses less digits than its factorization.

324390989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257359.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 324390989 is about 18010.8575309450. The cubic root of 324390989 is about 687.1047126686.

The spelling of 324390989 in words is "three hundred twenty-four million, three hundred ninety thousand, nine hundred eighty-nine".