327749981 has 12 divisors (see below), whose sum is σ = 373583520. Its totient is φ = 286612560.

The previous prime is 327749971. The next prime is 327750061. The reversal of 327749981 is 189947723.

It is not a de Polignac number, because 327749981 - 2¹⁴ = 327733597 is a prime.

It is a super-2 number, since 2×327749981² = 214840100091000722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327749971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47825 + ... + 54246.

It is an arithmetic number, because the mean of its divisors is an integer number (31131960).

Almost surely, 2^327749981 is an apocalyptic number.

It is an amenable number.

327749981 is a deficient number, since it is larger than the sum of its proper divisors (45833539).

327749981 is a wasteful number, since it uses less digits than its factorization.

327749981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102116 (or 102103 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 327749981 is about 18103.8664654819. The cubic root of 327749981 is about 689.4681759281.

The spelling of 327749981 in words is "three hundred twenty-seven million, seven hundred forty-nine thousand, nine hundred eighty-one".