329949913 has 2 divisors, whose sum is σ = 329949914. Its totient is φ = 329949912.

The previous prime is 329949911. The next prime is 329949929. The reversal of 329949913 is 319949923.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279993289 + 49956624 = 16733^2 + 7068^2 .

It is a cyclic number.

It is not a de Polignac number, because 329949913 - 2¹ = 329949911 is a prime.

Together with 329949911, it forms a pair of twin primes.

It is equal to p_17782888 and since 329949913 and 17782888 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (329949911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164974956 + 164974957.

It is an arithmetic number, because the mean of its divisors is an integer number (164974957).

Almost surely, 2^329949913 is an apocalyptic number.

It is an amenable number.

329949913 is a deficient number, since it is larger than the sum of its proper divisors (1).

329949913 is an equidigital number, since it uses as much as digits as its factorization.

329949913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 49.

The square root of 329949913 is about 18164.5234729678. The cubic root of 329949913 is about 691.0073593768.

The spelling of 329949913 in words is "three hundred twenty-nine million, nine hundred forty-nine thousand, nine hundred thirteen".