327406921 has 2 divisors, whose sum is σ = 327406922. Its totient is φ = 327406920.

The previous prime is 327406901. The next prime is 327406943. The reversal of 327406921 is 129604723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325622025 + 1784896 = 18045^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 327406921 - 2²³ = 319018313 is a prime.

It is not a weakly prime, because it can be changed into another prime (327406901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163703460 + 163703461.

It is an arithmetic number, because the mean of its divisors is an integer number (163703461).

Almost surely, 2^327406921 is an apocalyptic number.

It is an amenable number.

327406921 is a deficient number, since it is larger than the sum of its proper divisors (1).

327406921 is an equidigital number, since it uses as much as digits as its factorization.

327406921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 327406921 is about 18094.3892132340. The cubic root of 327406921 is about 689.2275336295.

The spelling of 327406921 in words is "three hundred twenty-seven million, four hundred six thousand, nine hundred twenty-one".