327979009 has 4 divisors (see below), whose sum is σ = 339288660. Its totient is φ = 316669360.

The previous prime is 327978953. The next prime is 327979013. The reversal of 327979009 is 900979723.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91680625 + 236298384 = 9575^2 + 15372^2 .

It is a cyclic number.

It is not a de Polignac number, because 327979009 - 2¹⁷ = 327847937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 327979009.

It is not an unprimeable number, because it can be changed into a prime (327979409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5654782 + ... + 5654839.

It is an arithmetic number, because the mean of its divisors is an integer number (84822165).

Almost surely, 2^327979009 is an apocalyptic number.

It is an amenable number.

327979009 is a deficient number, since it is larger than the sum of its proper divisors (11309651).

327979009 is a wasteful number, since it uses less digits than its factorization.

327979009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11309650.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 327979009 is about 18110.1907499617. The cubic root of 327979009 is about 689.6287360700.

The spelling of 327979009 in words is "three hundred twenty-seven million, nine hundred seventy-nine thousand, nine".