329405005 has 16 divisors (see below), whose sum is σ = 423589824. Its totient is φ = 245029120.

The previous prime is 329405003. The next prime is 329405009. The reversal of 329405005 is 500504923.

It is not a de Polignac number, because 329405005 - 2¹ = 329405003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329405003) 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 15 ways as a sum of consecutive naturals, for example, 16291 + ... + 30400.

It is an arithmetic number, because the mean of its divisors is an integer number (26474364).

Almost surely, 2^329405005 is an apocalyptic number.

It is an amenable number.

329405005 is a deficient number, since it is larger than the sum of its proper divisors (94184819).

329405005 is a wasteful number, since it uses less digits than its factorization.

329405005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46796.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 329405005 is about 18149.5180376780. The cubic root of 329405005 is about 690.6267532152.

Adding to 329405005 its reverse (500504923), we get a palindrome (829909928).

The spelling of 329405005 in words is "three hundred twenty-nine million, four hundred five thousand, five".