329989061 has 2 divisors, whose sum is σ = 329989062. Its totient is φ = 329989060.

The previous prime is 329989039. The next prime is 329989063. The reversal of 329989061 is 160989923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228584161 + 101404900 = 15119^2 + 10070^2 .

It is a cyclic number.

It is not a de Polignac number, because 329989061 - 2²² = 325794757 is a prime.

Together with 329989063, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 329988997 and 329989015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329989063) 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 as a sum of consecutive naturals, namely, 164994530 + 164994531.

It is an arithmetic number, because the mean of its divisors is an integer number (164994531).

Almost surely, 2^329989061 is an apocalyptic number.

It is an amenable number.

329989061 is a deficient number, since it is larger than the sum of its proper divisors (1).

329989061 is an equidigital number, since it uses as much as digits as its factorization.

329989061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 329989061 is about 18165.6010360241. The cubic root of 329989061 is about 691.0346872481.

The spelling of 329989061 in words is "three hundred twenty-nine million, nine hundred eighty-nine thousand, sixty-one".