329113821 has 4 divisors (see below), whose sum is σ = 438818432. Its totient is φ = 219409212.

The previous prime is 329113793. The next prime is 329113861. The reversal of 329113821 is 128311923.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 329113821 - 2¹¹ = 329111773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329113861) 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 in 3 ways as a sum of consecutive naturals, for example, 54852301 + ... + 54852306.

It is an arithmetic number, because the mean of its divisors is an integer number (109704608).

Almost surely, 2^329113821 is an apocalyptic number.

It is an amenable number.

329113821 is a deficient number, since it is larger than the sum of its proper divisors (109704611).

329113821 is a wasteful number, since it uses less digits than its factorization.

329113821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109704610.

The product of its digits is 2592, while the sum is 30.

The square root of 329113821 is about 18141.4944533244. The cubic root of 329113821 is about 690.4231955462.

The spelling of 329113821 in words is "three hundred twenty-nine million, one hundred thirteen thousand, eight hundred twenty-one".