321484729 has 2 divisors, whose sum is σ = 321484730. Its totient is φ = 321484728.

The previous prime is 321484711. The next prime is 321484741. The reversal of 321484729 is 927484123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248125504 + 73359225 = 15752^2 + 8565^2 .

It is an emirp because it is prime and its reverse (927484123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321484729 - 2⁹ = 321484217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321484691 and 321484700.

It is not a weakly prime, because it can be changed into another prime (321484759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160742364 + 160742365.

It is an arithmetic number, because the mean of its divisors is an integer number (160742365).

Almost surely, 2^321484729 is an apocalyptic number.

It is an amenable number.

321484729 is a deficient number, since it is larger than the sum of its proper divisors (1).

321484729 is an equidigital number, since it uses as much as digits as its factorization.

321484729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 321484729 is about 17929.9952314550. The cubic root of 321484729 is about 685.0466013370.

The spelling of 321484729 in words is "three hundred twenty-one million, four hundred eighty-four thousand, seven hundred twenty-nine".