326140729 has 2 divisors, whose sum is σ = 326140730. Its totient is φ = 326140728.

The previous prime is 326140697. The next prime is 326140751. The reversal of 326140729 is 927041623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319587129 + 6553600 = 17877^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 326140729 - 2⁵ = 326140697 is a prime.

It is a super-2 number, since 2×326140729² = 212735550225302882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 326140694 and 326140703.

It is not a weakly prime, because it can be changed into another prime (326140229) 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 as a sum of consecutive naturals, namely, 163070364 + 163070365.

It is an arithmetic number, because the mean of its divisors is an integer number (163070365).

Almost surely, 2^326140729 is an apocalyptic number.

It is an amenable number.

326140729 is a deficient number, since it is larger than the sum of its proper divisors (1).

326140729 is an equidigital number, since it uses as much as digits as its factorization.

326140729 is an odious number, because the sum of its binary digits is odd.

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

The square root of 326140729 is about 18059.3667939936. The cubic root of 326140729 is about 688.3378947155.

The spelling of 326140729 in words is "three hundred twenty-six million, one hundred forty thousand, seven hundred twenty-nine".