326828639 has 2 divisors, whose sum is σ = 326828640. Its totient is φ = 326828638.

The previous prime is 326828603. The next prime is 326828651. The reversal of 326828639 is 936828623.

It is a strong prime.

It is an emirp because it is prime and its reverse (936828623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326828639 - 2¹² = 326824543 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 326828593 and 326828602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326828039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163414319 + 163414320.

It is an arithmetic number, because the mean of its divisors is an integer number (163414320).

Almost surely, 2^326828639 is an apocalyptic number.

326828639 is a deficient number, since it is larger than the sum of its proper divisors (1).

326828639 is an equidigital number, since it uses as much as digits as its factorization.

326828639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The square root of 326828639 is about 18078.4025566420. The cubic root of 326828639 is about 688.8215121130.

The spelling of 326828639 in words is "three hundred twenty-six million, eight hundred twenty-eight thousand, six hundred thirty-nine".