327974921 has 2 divisors, whose sum is σ = 327974922. Its totient is φ = 327974920.

The previous prime is 327974909. The next prime is 327974951. The reversal of 327974921 is 129479723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306250000 + 21724921 = 17500^2 + 4661^2 .

It is a cyclic number.

It is not a de Polignac number, because 327974921 - 2¹⁴ = 327958537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (327974951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163987460 + 163987461.

It is an arithmetic number, because the mean of its divisors is an integer number (163987461).

Almost surely, 2^327974921 is an apocalyptic number.

It is an amenable number.

327974921 is a deficient number, since it is larger than the sum of its proper divisors (1).

327974921 is an equidigital number, since it uses as much as digits as its factorization.

327974921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 327974921 is about 18110.0778849788. The cubic root of 327974921 is about 689.6258708318.

The spelling of 327974921 in words is "three hundred twenty-seven million, nine hundred seventy-four thousand, nine hundred twenty-one".